WO2015136826A1 - エンジン始動装置 - Google Patents
エンジン始動装置 Download PDFInfo
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- WO2015136826A1 WO2015136826A1 PCT/JP2015/000211 JP2015000211W WO2015136826A1 WO 2015136826 A1 WO2015136826 A1 WO 2015136826A1 JP 2015000211 W JP2015000211 W JP 2015000211W WO 2015136826 A1 WO2015136826 A1 WO 2015136826A1
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- WIPO (PCT)
- Prior art keywords
- switch
- starter
- storage unit
- power storage
- voltage power
- Prior art date
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Classifications
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- 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
- F02N11/04—Starting of engines by means of electric motors the motors being associated with current generators
-
- 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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/20—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
-
- 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
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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
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
-
- 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
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
- H02J1/122—Provisions for temporary connection of DC sources of essentially the same voltage, e.g. jumpstart cables
-
- 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
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/80—Time limits
-
- 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
- B60L2260/26—Transition between different drive modes
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- 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
- F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
-
- 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
- F02N11/087—Details of the switching means in starting circuits, e.g. relays or electronic switches
-
- 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
- F02N2011/0881—Components of the circuit not provided for by previous groups
- F02N2011/0888—DC/DC converters
-
- 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
- F02N2300/00—Control related aspects of engine starting
- F02N2300/10—Control related aspects of engine starting characterised by the control output, i.e. means or parameters used as a control output or target
- F02N2300/102—Control of the starter motor speed; Control of the engine speed during cranking
-
- 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
- F02N2300/00—Control related aspects of engine starting
- F02N2300/20—Control related aspects of engine starting characterised by the control method
- F02N2300/2011—Control involving a delay; Control involving a waiting period before engine stop or engine start
-
- 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
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/46—The network being an on-board power network, i.e. within a vehicle for ICE-powered road 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
- Y02T10/72—Electric energy management in electromobility
Definitions
- the present invention relates to a two-power-source engine starting device.
- FIG. 6 is a configuration diagram of a vehicle control device including a conventional two-power-source engine starting device 100 disclosed in Patent Document 1. As shown in FIG.
- a starter 103 that imparts initial rotation to the rotating shaft (crankshaft) of the engine 101 is mechanically connected.
- the motor generator 105 exchanges power with the high voltage battery 109 whose terminal voltage becomes a predetermined high voltage via the inverter 107.
- the starter 103 uses a low voltage battery 111 having a terminal voltage lower than that of the high voltage battery 109 as a power source.
- the electric power of the high voltage battery 109 can be supplied to the low voltage battery 111 via an insulating step-down converter (DCDC converter 113).
- the control device 115 controls the control amount of the in-vehicle main unit.
- the control device 115 variably sets the voltage applied to the starter 103 by generating a voltage to be applied to the starter 103 by the DCDC converter 113, and as a result, the rotation speed of the starter 103 is constant regardless of environmental factors such as temperature. Control is performed.
- the engine starter includes a high voltage power storage unit, a DC / DC converter electrically connected to the high voltage power storage unit, a first switch electrically connected to the DC / DC converter, and a connection point of the first switch A second switch electrically connected to the second switch, a low-voltage power storage unit electrically connected to the second switch, a starter for starting the engine, and a control unit.
- the control unit turns on the first switch while keeping the second switch off, outputs the power of the high-voltage power storage unit to the starter, and starts rotating the starter at a certain time.
- the DC / DC converter is controlled.
- the control unit turns on the second switch so that the power of the low voltage power storage unit is also the power of the high voltage power storage unit.
- the second switch is controlled so as to be supplied to the starter. The controller turns off the first switch and the second switch when the engine completes starting.
- This engine starter can drive the starter and start the engine even with a small DC / DC converter.
- FIG. 1 is a schematic configuration diagram of an engine starter according to the first embodiment.
- FIG. 2 is a block circuit diagram of the engine starting device in the first embodiment.
- FIG. 3 is a diagram showing the output voltage of the DC / DC converter, the output of the low-voltage power storage unit, and the rotation speed of the starter in the operation of the engine starting device in the first embodiment.
- FIG. 4 is a diagram showing the output voltage of the DC / DC converter, the output of the low-voltage power storage unit, and the rotation speed of the starter in another operation of the engine starting device in the first embodiment.
- FIG. 5 is a block circuit diagram of the engine starting device according to the second embodiment.
- FIG. 6 is a block diagram of a conventional vehicle control apparatus.
- FIGS. 1 and 2 are a schematic configuration diagram and a block circuit diagram of the engine starting device 1 according to the first embodiment, respectively.
- the engine starter 1 is electrically connected to a high voltage power storage unit 11, a DC / DC converter 13 electrically connected to the high voltage power storage unit 11, and a DC / DC converter 13.
- the switching circuit 30, the low voltage power storage unit 15 electrically connected to the switching circuit 30, the starter 17 electrically connected to the switching circuit 30, the DC / DC converter 13 and the switching circuit 30 are electrically connected.
- a connected control unit 19 The voltage of the low voltage power storage unit 15 is lower than the voltage of the high voltage power storage unit 11.
- the switching circuit 30 includes a switch 41 having ends 45 and 47 and a switch 43 having ends 49 and 51.
- the control unit 19 controls the switches 41 and 43 so that the ends 45 and 47 of the switch 41 are electrically connected and disconnected, and the ends 49 and 51 of the switch 43 are electrically connected and disconnected.
- An end 47 of the switch 41 is connected to an end 49 of the switch 43 at a connection point 53.
- An end 45 of the switch 41 is connected to the end 13 ⁇ / b> A of the DC / DC converter 13.
- An end 51 of the switch 43 is electrically connected to the low voltage power storage unit 15.
- the starter 17 is electrically connected to the connection point 53.
- the control unit 19 controls the DC / DC converter 13 so that the switch 43 is turned off and only the switch 41 is turned on to output the power of the high voltage power storage unit 11 to the starter 17. Thereafter, when a predetermined period elapses or when the rotation speed of the starter 17 reaches the predetermined rotation speed, the control unit 19 turns on the switch 43 so that the electric power of the low voltage power storage unit 15 is also supplied to the starter 17. Control. When the engine 23 completes starting, the switches 41 and 43 are turned off.
- the starter 17 can be driven and the engine 23 can be started and the engine 23 can be started.
- an engine 23 is mounted on a vehicle body 21 of a vehicle 21A for driving the vehicle 21A.
- the engine 23 is mounted on the front portion of the vehicle body 21 and drives the front wheels. Therefore, the vehicle 21A is an FF (front engine, front drive) vehicle. Since the configuration for driving the front wheels by the engine 23 is the same as that of a general FF vehicle, a detailed description thereof is omitted.
- the vehicle 21A is not limited to the FF vehicle, and may be another drive configuration such as a rear wheel drive vehicle or a four wheel drive vehicle.
- a motor 27 is connected to the axle 25 on the rear wheel side of the vehicle body 21.
- the motor 27 drives the axle 25 and at the time of deceleration of the vehicle 21A, is rotated by the axle 25 to generate electric power and generate regenerative power. Therefore, the motor 27 has a configuration capable of power running and regeneration.
- the motor 27 is not limited to the configuration connected to the axle 25, and may be configured to be connected to the front axle.
- An inverter 28 is electrically connected to the motor 27.
- the inverter 28 is electrically connected to the high voltage power storage unit 11. Therefore, the regenerative power generated by the motor 27 is charged to the high voltage power storage unit 11 by the inverter 28. Further, the power running operation of the motor 27 is performed via the inverter 28 by the electric power of the high voltage power storage unit 11.
- High voltage power storage unit 11 is a lithium ion battery having a rated charging voltage of 48V, for example.
- the high voltage power storage unit 11 is not limited to a lithium ion battery, and may be another secondary battery or a capacitor.
- the rated charging voltage is not limited to 48V, and may be higher or lower than that. However, in order to power the vehicle body 21, a large current flows if the rated charging voltage is too low. desirable.
- the high voltage storage unit 11 is electrically connected with a high voltage load 29 that can be driven at 48V.
- the high voltage load 29 is a load that mainly consumes a large amount of power, such as an electric power steering.
- the high voltage power storage unit 11 is further electrically connected to the low voltage power storage unit 15 via the DC / DC converter 13 and the switching circuit 30.
- the low voltage power storage unit 15 is a lead battery having a low voltage charging voltage of 12V. Therefore, the voltage of the low voltage power storage unit 15 is lower than that of the high voltage power storage unit 11.
- the DC / DC converter 13 has a unidirectional step-down configuration having an input end 13B and an output end 13A.
- the power of the high-voltage power storage unit 11 connected to the end 13B is used. And a function of supplying power from the end 13B to the switching circuit 30.
- the switching circuit 30 has a function of supplying at least one of the power from the DC / DC converter 13 and the power from the low-voltage power storage unit 15 to the starter 17.
- the specific configuration of the switching circuit 30 will be described later.
- a low voltage load 31 is electrically connected to the low voltage power storage unit 15.
- the low voltage load 31 has lower power consumption than the high voltage load 29.
- An alternator 33 is electrically connected to the low voltage power storage unit 15.
- the DC / DC converter 13 and the switching circuit 30 are electrically connected to the control unit 19.
- the control unit 19 includes a peripheral circuit such as a microcomputer and a memory, and controls the output of the DC / DC converter 13 or switches the switching circuit 30.
- the control unit 19 performs overall control of the vehicle, and is connected to various electrical components such as the engine 23, the inverter 28, and the alternator 33, for example.
- the thick line indicates power system wiring
- the thin line indicates signal system wiring
- the high voltage power storage unit 11 is electrically connected to the motor 27 via the inverter 28 by power system wiring. Therefore, the high voltage power storage unit 11 stores regenerative power generated by the motor 27 due to regeneration. The high voltage power storage unit 11 is controlled by the inverter 28 so as to be discharged when the motor 27 is powered.
- the high voltage power storage unit 11 is also connected to the switching circuit 30 via the DC / DC converter 13.
- the switching circuit 30 will be described.
- the switching circuit 30 has two switches 41 and 43 connected in series with each other.
- the switch 41 is directly connected to the end 13 ⁇ / b> A serving as the positive electrode of the DC / DC converter 13.
- the end 51 of the switch 43 is directly connected to the positive electrode of the low voltage power storage unit 15.
- the end 13A of the DC / DC converter 13 is connected to the end 45 of the switch 41.
- An end 47 of the switch 41 is connected to an end 49 of the switch 43 at a connection point 53.
- the end 51 of the switch 43 is connected to the positive electrode of the low voltage power storage unit 15.
- the switches 41 and 43 can be turned on and off by an external signal.
- a relay is used.
- the switches 41 and 43 are not limited to relays, and may be, for example, semiconductor switches (such as field effect transistors).
- the starter 17 is connected to a connection point 53 between the end 47 of the switch 41 and the end 49 of the switch 43.
- the end 51 of the switch 43 is also electrically connected to the alternator 33.
- the high voltage power storage unit 11, the DC / DC converter 13, the inverter 28, the starter 17, the low voltage power storage unit 15, and the negative electrode of the alternator 33 are all connected to a common ground 55.
- FIG. 3 shows the output voltage of the end 13A of the DC / DC converter 13 in the operation of the engine starting device 1, the output of the low-voltage power storage unit 15, that is, the state of the switch 43, and the rotation speed of the starter 17.
- FIG. 3 shows the operation of the engine 23 during a cold start.
- the engine 23 is stopped and the starter 17 is not rotating, so the switches 41 and 43 are off.
- the DC / DC converter 13 is not yet operated, and the output voltage that is the voltage at the end 13A is 0V.
- the output voltage that is the voltage at the end 13A of the DC / DC converter 13 is the voltage at the end 45 of the switch 41 with respect to the ground 55.
- the control unit 19 controls the DC / DC converter 13 so that the DC / DC converter 13 outputs the output voltage V1 necessary for pushing out the pinion from the end 13A. Only the switch 41 is turned on and the switch 43 is kept off. As a result, the output voltage V1 of the DC / DC converter 13 is applied to the starter 17 via the switch 41. As a result, the starter 17 push-out operation is performed.
- the control unit 19 pushes the pinion of the starter 17 by the DC / DC converter 13, so that the output voltage at the end 13A of the DC / DC converter 13 is set to the minimum necessary output voltage V1. Can do. As a result, the power output from the DC / DC converter 13 can also be reduced. Moreover, the discharge of electric power from the low voltage power storage unit 15 can be suppressed.
- the control unit 19 controls the DC / DC converter 13 so that the starter 17 starts rotating with the electric power of the high voltage power storage unit 11. .
- the switch 41 is turned on and the switch 43 is kept off, and the control unit 19 outputs the output voltage at the end 13A of the DC / DC converter 13 from the output voltage V1 in order to perform the preliminary rotation of the starter 17. Increase to voltage V2.
- the contactor built in the starter 17 is turned on, and the rotation speed of the starter 17 gradually increases monotonously in the period d3 from time t20 to time t30. Pre-rotate.
- the rotation speed of the starter 17 in the preliminary rotation does not reach the rotation speed at which the engine 23 can start although the engine 23 rotates at a low speed. Therefore, the current flowing through the DC / DC converter 13 in the period d3 is still low. Note that a period d3 from time t20 to time t30 is determined in advance based on actual measurement and stored in the memory (control unit 19).
- the control unit 19 operates as follows.
- the control unit 19 controls the DC / DC converter 13 so that the DC / DC converter 13 outputs the output voltage V3 from the end 13A at time t30.
- the output voltage V3 is a voltage that allows the starter 17 to rotate at full speed together with the electric power of the low-voltage power storage unit 15, and is determined in advance based on actual measurement and stored in the memory (control unit 19).
- the control unit 19 turns on the switch 43 and maintains both the switches 41 and 43 on during a period d4 from time t30 to time t40.
- the output of the low voltage power storage unit 15 to the starter 17 is turned on, and power is also supplied from the low voltage power storage unit 15 to the starter 17.
- the starter 17 receives supply of power from the high voltage power storage unit 11 and power from the low voltage power storage unit 15 via the DC / DC converter 13.
- the starter 17 is operated by the two power supplies, and thus the power supply, that is, the high-voltage power storage unit 11 and the low-voltage power storage unit 15 are all prevented from releasing power when the starter 17 is driven.
- the current flowing through the DC / DC converter 13 can be suppressed.
- the low voltage power storage unit 15 (lead battery) also suppresses the release of electric power, the occurrence of sulfation due to overdischarge is suppressed, and the life can be extended.
- the power from the high voltage power storage unit 11 is supplied to the starter 17 via the DC / DC converter 13, and in the period d4, the power from the high voltage power storage unit 11 is supplied.
- the power from the low-voltage power storage unit 15 is also supplied to the starter 17.
- the starter 17 Since the starter 17 tries to rotate at full speed during a period d4 from time t30 to time t40, the rotation speed of the starter 17 gradually increases monotonously with time until time t40 as shown in FIG.
- the maximum rotation speed R2 is obtained.
- the control unit 19 performs fuel injection and ignition on the engine 23 at time t40. As a result, the start of the engine 23 is completed at time t40.
- the control unit 19 turns off both the switches 41 and 43 and stops the DC / DC converter 13 at time t40 in order to stop the starter 17.
- the power supply to the starter 17 is stopped, so that the pinion is detached from the ring gear. Therefore, as shown in FIG. 3, the rotation speed of the starter 17 rapidly decreases in a period d5 from time t40 to time t50, and the starter 17 stops at time t50.
- the switches 41 and 43 are off and the DC / DC converter 13 is stopped.
- the current flowing from the high voltage power storage unit 11 and the low voltage power storage unit 15 to the DC / DC converter 13 is all. It is suppressed. As a result, the DC / DC converter 13 does not need to be designed for a large current, and can be downsized. Furthermore, since the discharge of electric power from the low voltage power storage unit 15 during driving of the starter 17 is reduced, it is possible to suppress a decrease in the state of charge and to extend the life of the low voltage power storage unit 15.
- the two-power-source engine starter 1 that can drive the starter 17 and start the engine 23 even with the small DC / DC converter 13 can be obtained.
- the control unit 19 when it is determined that the rotation speed of the starter 17 has reached the predetermined rotation speed R1, the control unit 19 turns on the switch 43 so that the DC / DC converter 13 outputs the output voltage V3.
- This operation is not limited to the determination based on the predetermined rotation speed R1, but may be determined based on the elapse of a predetermined period from time t20. That is, at time t30 when a predetermined period has elapsed from time t20, the control unit 19 may turn on the switch 43 so that the DC / DC converter 13 outputs the output voltage V3. Also in this case, the above-described DC / DC converter 13 can be reduced in size, and it is not necessary to measure the rotational speed of the starter 17, so that the configuration and control are simplified. In addition, what is necessary is just to obtain
- control unit 19 gradually increases the output voltage of the DC / DC converter 13 over time when the switch 43 is turned off and only the switch 41 is turned on.
- the rotational speed in the preliminary rotation of the starter 17 can be gradually increased, so that the speed of change in the rotational speed is small until the full speed rotation of the starter 17, and thus the engine start is less burdened on the starter 17.
- the device 1 can be realized.
- the control unit 19 turns on only the switch 41 among the switches 41 and 43, and the DC / DC converter so that the output voltage at the end 13A of the DC / DC converter 13 gradually increases monotonously with time. 13 is controlled.
- the change rate of the rotation speed of the starter 17 in the period d3 from time t20 to time t30 that is, the inclination of the rotation speed of the starter 17 with respect to the time can be arbitrarily adjusted. In the operation illustrated in FIG.
- the control unit 19 changes the change rate of the rotation speed of the starter 17 in the period d3, that is, the inclination of the rotation speed of the starter 17 with respect to time, Control is performed so as to match the rate of change of the rotational speed until the rotation, that is, the inclination of the rotational speed with respect to time.
- the inclination of the rotation speed in the period d3 from time t20 to time t30 is obtained in advance based on actually measured data and stored in the memory (control unit 19).
- the controller 19 controls the output voltage of the DC / DC converter 13 so that the inclination of the rotation speed of the starter 17 becomes the stored inclination.
- the output voltage of the DC / DC converter 13 is controlled so as to gradually and monotonically increase linearly from the output voltage V2 to the output voltage V3.
- the control unit 19 turns on the switch 43 and maintains the output voltage V3 of the DC / DC converter 13.
- the output of the low voltage power storage unit 15 to the starter 17 is turned on, and the power from the high voltage power storage unit 11 and the power from the low voltage power storage unit 15 are supplied to the starter 17.
- the output voltage V3 is a voltage when the starter 17 is rotated at full speed, the rotation speed of the starter 17 continues to increase from time t30 to time t40 as shown in FIG.
- the end 13A of the DC / DC converter 13 is set so that the inclination of the rotational speed in the period d4 from the time t30 to the time t40 is substantially the same in the error range as that in the period d3 from the time t20 to the time t30. Therefore, the rotational speed increases linearly from 0 to the rotational speed R2.
- the power from the high voltage power storage unit 11 is supplied to the starter 17 via the DC / DC converter, and in the period d4, the power from the high voltage power storage unit 11 is supplied.
- electric power from the low-voltage power storage unit 15 is also supplied to the starter 17.
- the operation shown in FIG. 4 supplies power to the starter 17 basically in the same manner as the operation shown in FIG. 3, so that the DC / DC converter 13 can be downsized. Since the starter 17 is controlled by the DC / DC converter 13 so that the rotational speed does not change suddenly, the engine starter 1 that reduces the burden on the starter 17 is obtained.
- the output voltage at the end 13A of the DC / DC converter 13 is
- this is not limited to a linearly increasing operation, and the output voltage may be increased stepwise or non-linearly.
- a sudden change in the rotational speed of the starter 17 can also be suppressed by changing the rotational speed of the starter 17 in a quadratic function.
- the voltage applied to the starter 103 is variably set regardless of environmental factors such as temperature, and the rotation speed of the starter 103 is kept constant.
- the low voltage battery 111 always supplies power to the starter 103 when the starter 103 is driven.
- the current flowing through the DCDC converter 113 is reduced as compared with the case where 100% of the power from the high voltage battery 109 is supplied to the starter 103 via the DCDC converter 113.
- the DCDC converter 113 needs to pass a large current of about 100 A in order to compensate for the decrease in the discharge capability of the low voltage battery 111. Therefore, the DCDC converter 113 must be enlarged in response to a large current.
- the control unit 19 when starting the starter 17, the control unit 19 first turns on only the switch 41 among the switches 41 and 43, thereby The DC / DC converter 13 is controlled to output the power of the unit 11 to the starter 17.
- the control unit 19 turns on the switch 43 to turn on the low voltage power storage unit 15. Electric power is also supplied to the starter 17.
- the starter 17 is preliminarily rotated by the electric power of the high voltage power storage unit 11, but the electric power at this time may be small.
- the starter 17 when the starter 17 is rotated at full speed, preliminary rotation has already been performed, so that less power is required than when the starter 17 is rotated at full speed immediately after the starter 17 is stopped. Furthermore, since the power of the low voltage power storage unit 15 is supplied to the starter 17 in addition to the power of the high voltage power storage unit 11, the current flowing through the DC / DC converter 13 may be small.
- the starter 17 can be driven and the engine 23 of the 2 power supply system which can start the engine 23 is obtained.
- FIG. 5 is a block circuit diagram of engine starter 1A in the second embodiment.
- An engine starting device 1A according to the second embodiment includes a switching circuit 30A instead of the switching circuit 30 of the engine starting device 1 according to the first embodiment shown in FIGS.
- the switching circuit 30 ⁇ / b> A further includes a switch 57 electrically connected between the end 45 of the switch 41 and the end 51 of the switch 43 in the switching circuit 30 shown in FIG. 2.
- the switch 57 has ends 58 and 59.
- the end 58 of the switch 57 is connected to the end 45 of the switch 41, and the end 59 of the switch 57 is connected to the end 51 of the switch 43.
- the control unit 19 controls the switch 57 so that the ends 58 and 59 of the switch 57 are electrically connected and disconnected.
- control unit 19 turns on the switch 57 before starting the starter 17 and controls the DC / DC converter 13 so that the starter 17 can be started.
- power is exchanged between the high voltage power storage unit 11 and the low voltage power storage unit 15.
- the accuracy with which power is supplied from the two power sources when the engine 23 is started can be increased, so that the possibility of starting the starter 17 from only the high voltage power storage unit 11 via the DC / DC converter 13 is reduced. . Therefore, the possibility of a large current flowing through the DC / DC converter 13 is suppressed, and the DC / DC converter 13 can be downsized.
- the switch 57 uses a relay like the switches 41 and 43.
- the switch 57 is not limited to a relay, and may be another switch such as a semiconductor switch.
- the switches 41, 43, and 57 constitute a switching circuit 30A.
- the DC / DC converter 13 of the engine starting device 1A uses a bidirectional type to exchange power between the high voltage power storage unit 11 and the low voltage power storage unit 15 as described above. Yes. That is, the DC / DC converter 13 lowers the voltage (terminal 13B) of the high-voltage power storage unit 11 to supply power to the low-voltage power storage unit 15 (terminal 13A), and the voltage (terminal 13A) of the low-voltage power storage unit 15 is supplied. The power can be supplied to the high voltage power storage unit 11 (end 13B).
- the control unit 19 The remaining amount of charge, which is the amount of power stored in each of the power storage unit 11 and the low voltage power storage unit 15, is extracted from the memory. Note that the remaining charge amount is obtained by the control unit 19 from charge / discharge current integration of the high voltage power storage unit 11 and the low voltage power storage unit 15 and stored in the memory.
- the control unit 19 Leaves the switch 57 off and waits until the ignition switch is turned on.
- the control unit 19 performs charging. Power is exchanged by supplying power from a power storage unit with sufficient remaining power to an insufficient power storage unit. The specific operation will be described below.
- the starter 17 can be driven only by the high-voltage power storage unit 11, but a large current flows through the DC / DC converter 13, so that the DC / DC converter 13 is enlarged.
- the control unit 19 turns on the switch 57 while the switches 41 and 43 are off. As a result, the high voltage power storage unit 11 and the low voltage power storage unit 15 are electrically connected via the DC / DC converter 13.
- the control unit 19 controls the DC / DC converter 13 so that the DC / DC converter 13 charges the low voltage power storage unit 15 with the power of the high voltage power storage unit 11.
- control unit 19 steps down the voltage of the high voltage power storage unit 11 at the end 13 ⁇ / b> B, outputs it from the end 13 ⁇ / b> A, and supplies it to the low voltage power storage unit 15. Thereby, sufficient electric power for driving the starter 17 can be stored in both the high voltage power storage unit 11 and the low voltage power storage unit 15 in advance. After that, when the power interchange is completed so that the high voltage power storage unit 11 and the low voltage power storage unit 15 can drive the starter 17, the control unit 19 turns off the switch 57 and waits until the ignition switch is turned on.
- the starter 17 can be driven only by the low-voltage power storage unit 15, but in this case, a large current flows from the low-voltage power storage unit 15 and the remaining amount of charge rapidly decreases. Life may be shortened.
- the control unit 19 first turns on the switch 57 while the switches 41 and 43 are off. As a result, the high voltage power storage unit 11 and the low voltage power storage unit 15 are electrically connected via the DC / DC converter 13.
- the control unit 19 controls the DC / DC converter 13 so that the DC / DC converter 13 charges the power of the low voltage power storage unit 15 to the high voltage power storage unit 11.
- the control unit 19 boosts the voltage of the low voltage storage unit 15 at the end 13 ⁇ / b> A, outputs it from the end 13 ⁇ / b> B, and supplies it to the high voltage storage unit 11. Thereby, sufficient electric power for driving the starter 17 can be stored in both the high voltage power storage unit 11 and the low voltage power storage unit 15 in advance.
- the control unit 19 turns off the switch 57 and waits until the ignition switch is turned on.
- the subsequent operations are the same as the operations shown in FIG. 3 or 4 of the engine starter 1 in the first embodiment.
- the DC / DC converter 13 can be miniaturized and the life of the low-voltage power storage unit 15 can be extended. .
- the engine starting device 1A of the second embodiment power interchange is started when the door lock is unlocked or the door is opened, but one of the high voltage power storage unit 11 or the low voltage power storage unit 15 is charged.
- the power interchange may not be completed between the time when the door lock is unlocked or the door is opened and the ignition switch is turned on.
- the control unit 19 may notify the driver that the power interchange has not ended and allow the ignition switch to be turned on after the power interchange has ended.
- power interchange may be started as necessary from a time before that time by a timer.
- control unit 19 may learn and store the time when the vehicle 21A is used.
- the operation at the cold start of the engine 23 has been described. This is because the engine starting devices 1 and 1A are mounted on a vehicle 21A having an idling stop function. You may apply to the operation
- the switch 43 may be replaced by a magnet switch built in the starter 17. This simplifies the configuration of the engine starter 1, 1A.
- the engine starter according to the present invention can reduce the size of the DC / DC converter, it is particularly useful as a two-power source engine starter.
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Abstract
Description
図1と図2はそれぞれ実施の形態1におけるエンジン始動装置1の概略構成図とブロック回路図である。
図5は実施の形態2におけるエンジン始動装置1Aのブロック回路図である。図5において、図1と図2に示す実施の形態1におけるエンジン始動装置1と同じ部分には同じ参照符号を付す。実施の形態2におけるエンジン始動装置1Aは、図1と図2に示す実施の形態1におけるエンジン始動装置1の切替回路30の代わりに切替回路30Aを備える。切替回路30Aは、図2に示す切替回路30に、スイッチ41の端45とスイッチ43の端51との間に電気的に接続されたスイッチ57をさらに有する。具体的には、スイッチ57は、端58、59を有する。スイッチ57の端58はスイッチ41の端45に接続され、スイッチ57の端59はスイッチ43の端51に接続されている。制御部19はスイッチ57の端58、59の間を電気的に断接するようにスイッチ57を制御する。
11 高電圧蓄電部
13 DC/DCコンバータ
15 低電圧蓄電部
17 スタータ
19 制御部
23 エンジン
41 スイッチ(第1スイッチ)
43 スイッチ(第2スイッチ)
53 接続点
57 スイッチ(第3スイッチ)
Claims (3)
- エンジンを始動するエンジン始動装置であって、
高電圧蓄電部と、
前記高電圧蓄電部と電気的に接続されるDC/DCコンバータと、
前記DC/DCコンバータと電気的に接続された第1端と、第2端とを有する第1スイッチと、
前記第1スイッチの前記第2端と接続点で電気的に接続された第1端と、第2端とを有する第2スイッチと、
前記第2スイッチの前記第2端と電気的に接続された、前記高電圧蓄電部より電圧が低い低電圧蓄電部と、
前記接続点に電気的に接続されて、前記エンジンを始動させるスタータと、
前記DC/DCコンバータと前記第1スイッチと前記第2スイッチと電気的に接続された制御部と、
を備え、
前記制御部は、
前記スタータを始動する際に、前記第2スイッチをオフに維持した状態で前記第1スイッチをオンにして、前記高電圧蓄電部の電力を前記スタータへ出力して或る時刻に前記スタータを回転させ始めるように前記DC/DCコンバータを制御し、
前記或る時刻から所定期間が経過するか、または前記スタータの回転数が所定回転数に至ると、前記第2スイッチをオンにすることで前記低電圧蓄電部の電力も前記高電圧蓄電部の前記電力と共に前記スタータへ供給するように前記第2スイッチを制御し、
前記エンジンが始動を完了すると、前記第1スイッチと前記第2スイッチをオフにする、
ように構成された、エンジン始動装置。 - 前記制御部は、前記第2スイッチがオフの状態で前記第1スイッチがオンの際に、前記DC/DCコンバータの出力電圧を経時的に大きくするように構成されている、請求項1に記載のエンジン始動装置。
- 前記第1スイッチの前記第1端と前記第2スイッチの前記第2端との間に電気的に接続された第3スイッチをさらに備え、
前記制御部は、前記スタータを始動する前に、前記第3スイッチをオンにするとともに、前記DC/DCコンバータを制御して、前記スタータの始動が可能となるように前記高電圧蓄電部と前記低電圧蓄電部の間で電力の融通を行うように構成されている、請求項1に記載のエンジン始動装置。
Priority Applications (3)
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EP15761647.5A EP3118445B1 (en) | 2014-03-13 | 2015-01-20 | Engine starting device |
US15/035,457 US20160290304A1 (en) | 2014-03-13 | 2015-01-20 | Engine starting device |
JP2016507282A JP6349555B2 (ja) | 2014-03-13 | 2015-01-20 | エンジン始動装置およびその制御方法 |
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JP2014049640 | 2014-03-13 | ||
JP2014-049640 | 2014-03-13 |
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WO2015136826A1 true WO2015136826A1 (ja) | 2015-09-17 |
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PCT/JP2015/000211 WO2015136826A1 (ja) | 2014-03-13 | 2015-01-20 | エンジン始動装置 |
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US (1) | US20160290304A1 (ja) |
EP (1) | EP3118445B1 (ja) |
JP (1) | JP6349555B2 (ja) |
WO (1) | WO2015136826A1 (ja) |
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JP2020157861A (ja) * | 2019-03-26 | 2020-10-01 | 株式会社Subaru | 制御装置 |
JP2022508029A (ja) * | 2018-11-08 | 2022-01-19 | ▲黄▼ 永昇 | 自動車のバッテリーユニットとスーパーキャパシタとの間の電気的接続及び切断を制御する方法および装置 |
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US10605217B2 (en) | 2017-03-07 | 2020-03-31 | GM Global Technology Operations LLC | Vehicle engine starter control systems and methods |
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Also Published As
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EP3118445A4 (en) | 2017-12-06 |
JPWO2015136826A1 (ja) | 2017-04-06 |
EP3118445A1 (en) | 2017-01-18 |
JP6349555B2 (ja) | 2018-07-04 |
EP3118445B1 (en) | 2019-12-18 |
US20160290304A1 (en) | 2016-10-06 |
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