WO2012029479A1 - 充電制御装置及び充電システム - Google Patents
充電制御装置及び充電システム Download PDFInfo
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- WO2012029479A1 WO2012029479A1 PCT/JP2011/067446 JP2011067446W WO2012029479A1 WO 2012029479 A1 WO2012029479 A1 WO 2012029479A1 JP 2011067446 W JP2011067446 W JP 2011067446W WO 2012029479 A1 WO2012029479 A1 WO 2012029479A1
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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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0069—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to the isolation, e.g. ground fault or leak current
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/04—Cutting off the power supply under fault conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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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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- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
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- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
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- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/65—Monitoring or controlling charging stations involving identification of vehicles or their battery types
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- 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
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- B60L2210/00—Converter types
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60L2210/00—Converter types
- B60L2210/40—DC to AC converters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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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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- 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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- 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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Definitions
- the present invention relates to a charging control device and a charging system provided in a vehicle such as a plug-in type EV (Electrical Vehicle) or HEV (Hybrid Electric Vehicle) capable of charging a capacitor from an external power source.
- a vehicle such as a plug-in type EV (Electrical Vehicle) or HEV (Hybrid Electric Vehicle) capable of charging a capacitor from an external power source.
- a plug-in type EV Electric Vehicle
- HEV Hybrid Electric Vehicle
- FIG. 22 is a schematic configuration diagram of a part related to a plug-in hybrid vehicle charging system disclosed in Patent Document 1.
- pilot signal CPLT from control pilot circuit 334 in charging cable 300 is used as an activation signal for the charging system.
- FIG. 23 is a diagram for explaining the charging system shown in FIG. 22 in more detail.
- FIG. 24 is an example of a timing chart of pilot signal CPLT shown in FIGS.
- the control pilot circuit 334 in the charging cable 300 includes a voltage sensor 604 and an oscillator 602.
- the oscillator 602 is operated by electric power supplied from the power source 402.
- the oscillator 602 outputs a non-oscillating signal when the potential of the pilot signal CPLT detected by the voltage sensor 604 is in the vicinity of a specified initial potential V (1) (for example, 12V).
- V (1) for example, 12V
- V (2) for example, 9V
- V (3) for example, 6V
- ECU 170 includes a resistance circuit 502, input buffers 508 and 510, and a CPU (Control Processing Unit) 520.
- Resistance circuit 502 includes pull-down resistance elements R (2), R (3) and switches SW (1), SW (2).
- the CPU 520 includes a CPU 512 and a CPU 514.
- Pull-down resistance element R (2) and switch SW (1) are connected in series between control pilot line L (1) through which pilot signal CPLT is communicated and vehicle ground 518.
- the pull-down resistor element R (3) and the switch SW (2) are connected in series between the control pilot line L (1) and the vehicle ground 518, and the pull-down resistor element R (2) and the switch SW ( 1) connected in parallel.
- the switch SW (1) is turned on / off by a control signal from the CPU 512.
- switch SW (1) When switch SW (1) is turned on, pull-down resistance element R (2) and vehicle ground 518 are connected.
- switch SW (1) is turned off, pull-down resistance element R (2) and vehicle ground 518 are disconnected.
- switch SW (1) is off, and pull-down resistance element R (2) and vehicle ground 518 are not connected. That is, when the charging cable 300 is connected to the vehicle, the switch SW (1) is turned off, and the pull-down resistor element R (2) and the vehicle ground 518 are not connected.
- a power source 516 whose supply power is controlled by a control signal from the CPU 514 is connected to the switch SW (2).
- the switch SW (2) When power is supplied from the power source 516 to the switch SW (2) by the control signal from the CPU 514, the switch SW (2) is turned on, and the pull-down resistor element R (3) and the vehicle ground 518 are connected.
- the power supply from the power source 516 to the switch SW (2) is cut off by the control signal from the CPU 514, the switch SW (2) is turned off, and the pull-down resistor element R (3) and the vehicle ground 518 are disconnected.
- the switch SW (2) is turned off, and the pull-down resistor element R (3) and the vehicle ground 518 are not connected.
- the resistance circuit 502 switches the potential of the pilot signal CPLT by turning on / off the switches SW (1) and SW (2) in accordance with a control signal from the CPU 520. That is, when the switch SW (1) is turned off and the switch SW (2) is turned off in accordance with a control signal from the CPU 520, the pull-down resistor elements R (2) and R (3) are connected to the vehicle ground 518, respectively. The connection is disconnected, and the potential of pilot signal CPLT is maintained at initial potential V (1). Thereby, pilot signal CPLT is maintained in a non-oscillating state.
- the pull-down resistor element R (3) is connected to the vehicle ground 518, so that the pilot The potential of the signal CPLT is lowered to the oscillation potential V (2). Further, when the switch SW (1) is turned on in response to the control signal from the CPU 520, the pull-down resistance elements R (2) and R (3) are connected to the vehicle ground 518, so the potential of the pilot signal CPLT is It further drops to the specified potential V (3).
- FIG. 25 is a flowchart showing the operation of the CPU 520 in the charging system disclosed in Patent Document 1.
- CPU 520 determines whether or not potential VL (1) of pilot signal CPLT has changed from potential V (0) to initial potential V (1).
- V (1) potential of pilot signal CPLT
- step S102 CPU 520 starts to start up the charging system. For example, when the CPU 512 performs the process of S100 described above, the CPU 512 transmits a command to activate the CPU 514 to the CPU 514.
- step S104 CPU 520 determines whether or not the start-up of the charging system has been completed. For example, when the CPU 512 receives a response signal to the activation command in step S102 described above, the CPU 520 determines that the start-up of the charging system has been completed.
- step S106 CPU 520 transmits a control signal for turning on switch SW (2) to switch SW (2).
- step S108 CPU 520 starts preparation for charging.
- CPU 520 determines whether or not charging from charging cable 300 is possible based on the rated current detected from the SOC (State of charge) of the power storage device or the duty of pilot signal CPLT, and determines that charging is possible Then, the converter and the inverter provided in the path from the external power source to the power storage device are put on standby in an operable state.
- SOC State of charge
- step S110 CPU 520 determines whether or not the preparation for charging is completed. If it is determined that the preparation for charging has been completed (YES in step S110), in step S112, CPU 520 transmits a control signal for turning on switch SW (1) to switch SW (1). Next, in step S114, CPU 520 turns on a relay switch on the charging path to start charging. In step S116, CPU 520 determines whether or not charging is completed. If it is determined that charging is complete (YES in step S116), in step S118, CPU 520 transmits a control signal for turning off switches SW (1) and SW (2) to each.
- pilot signal CPLT based on the operation of CPU 520 described above will be described with reference to FIG.
- the potential of pilot signal CPLT is as shown in FIG. , V (0) (0 volt) rises to the initial potential V (1).
- pilot signal CPLT is input to vehicle-side control pilot line L (1).
- the pull-down resistor element R (3) is always connected to the vehicle ground 518.
- pilot signal CPLT drops from initial potential V (1) to oscillation potential V (2), and oscillator 602 of charging cable 300 causes pilot signal CPLT to oscillate. (See the dashed line B in FIG. 24).
- the switch SW (2) is provided between the pull-down resistor element R (3) and the vehicle ground 518, and the charging cable 300 is connected to the vehicle, but charging is performed. In the absence, the switch SW (2) is turned off so that the pull-down resistor element R (3) and the vehicle ground 518 are disconnected.
- the switch SW (2) is always turned on until the charging system is completely started up at time T (3) and charging is started at time T (5). State. As described above, when power is supplied from the power source 516 to the switch SW (2) by the control signal from the CPU 514, the switch SW (2) is turned on, and when the power supply is cut off, the switch SW (2) is turned on. Turned off. Therefore, during charging standby from time T (3) to time T (5), power is consumed to keep switch SW (2) on.
- the vehicle side In the charging system, power is not always supplied unconditionally when the user connects the charging cable 300 to the vehicle. For example, when applied to charging using midnight power by timer reservation on the external power supply device side, the vehicle side is in a charging standby state until the external power supply device is ready for power supply. Similarly, when the power load is adjusted in a power supply system provided with a large number of external power supply devices, the vehicle side is also in a charge standby state.
- time T (5) set in the timer on the external power supply side is reached, and preparation for power supply of the external power supply device is completed.
- the electric power of the power source 516 provided in the vehicle is consumed until it is ready (while waiting for charging). Further, during this time (while waiting for charging), at least power for operating the CPU 514 is also required.
- the charge reservation by the timer on the external power supply side consumes the power supply mounted on the vehicle. Since the power source is also used by an ECU or the like that controls the entire vehicle, a situation may occur in which the ECU cannot be activated if the remaining capacity of the power source falls below a predetermined level.
- a method may be conceived in which the vehicle charging system is temporarily put to sleep and the charging system is restarted by a timer provided on the vehicle side.
- the switch SW (2) since the switch SW (2) is turned off while the charging system is sleeping, the external power supply cannot detect that the charging cable 300 is connected to the vehicle. If the timing at which reserved charging is started by the timer on the external power supply device and the timing at which the charging system is activated and the switch SW (2) is turned on do not match, there is a problem that charging is not started. Further, if the timer setting provided on the vehicle side is set to a short time and the number of opportunities to start charging is increased, the charging system is frequently restarted, so that power consumption cannot be prevented.
- Patent Document 3 a pulse signal generated when an operation to increase or decrease the remaining capacity of a high voltage battery, such as an ignition switch, a charge switch, or an air conditioner on operation, is output as a start request pulse.
- a pulse signal generated when an operation to increase or decrease the remaining capacity of a high voltage battery such as an ignition switch, a charge switch, or an air conditioner on operation.
- a configuration for starting a system related to monitoring a battery mounted on a vehicle in response to a pulse is shown. However, if the pulse signal is continuously generated, the start request pulse continues to be output. At this time, even if the power supply to the battery is finished and the system is to be put to sleep, the system is restarted by the startup request pulse that is continuously output, so that the battery cannot be consumed.
- An object of the present invention is to provide a charging control device and a charging system that can reduce power consumption in a vehicle that is in a charging standby state and that can stably start charging.
- a charging control device includes a power cable (for example, implementation) from an external power source (for example, the external power source 1 in the embodiment).
- a charging control device for example, an embodiment
- the external power supply device switches the control signal from a non-oscillation state to an oscillation state when the external power supply device is ready for power supply.
- a control unit for example, the control unit 45 in the embodiment to perform and an activation unit (for example, the activation unit 47 in the embodiment) that activates the control unit are provided inside the vehicle, ,
- An oscillation state determination unit that determines whether the control signal input from the external power supply device via the power cable is in an oscillation state or a non-oscillation state and outputs an oscillation state determination signal (for example, oscillation in the embodiment)
- a state determination unit 51) and a start signal generation unit for example, an embodiment) that generates a start signal for starting the control unit when the oscillation state determination signal is switched from a state indicating no oscillation to a state indicating oscillation And an activation signal generator 53).
- the oscillation state determination unit oscillates the oscillation state determination signal from a state indicating no oscillation when the number of pulses of the control signal exceeds a predetermined number. It is characterized by switching to the state shown.
- the oscillation state determining unit is configured to accumulate a pulse number of the control signal during a predetermined period (for example, the integrator 63 in the embodiment). ) And the reference value with the cumulative number of the pulse integrator, and when the cumulative number is equal to or greater than the reference value, the oscillation state determination signal is changed from a non-oscillation state to an oscillation state. And a comparator for switching (for example, the comparator 65 in the embodiment).
- the oscillation state determination unit is a pulse width fixed conversion unit (for example, the pulse in the embodiment) that converts the control signal into a periodic signal having a constant pulse width.
- a fixed width conversion unit 61 wherein the pulse integration unit accumulates the number of pulses of the control signal converted to a constant pulse width by the fixed pulse width conversion unit.
- the oscillation state determining unit includes a frequency dividing unit (for example, the frequency dividing circuit 71 in the embodiment) that divides the control signal.
- the pulse integrating unit accumulates the number of pulses of the control signal divided by the frequency dividing unit.
- the pulse integration unit is configured by a count circuit that increases a count value when a pulse is input and decreases a count value when the pulse input is stopped. It is a feature.
- control unit outputs a clear signal for the start signal generating unit to stop generating the start signal.
- the oscillation state determination signal remains in a state indicating oscillation. Even so, it is characterized in that the state where the generation of the activation signal is stopped is maintained.
- a buffer circuit unit that converts the control signal input from the external power supply device and stabilizes the signal to a constant voltage amplitude (for example, the buffer circuit in the embodiment). 43), and a control signal whose constant voltage amplitude is stabilized by the buffer circuit unit is input to the oscillation state determination unit.
- the charging system is supplied from an external power supply device (for example, the external power supply device 1 in the embodiment) via a power cable (for example, the charging cable 2 in the embodiment).
- a charging system that charges a battery (for example, the high-voltage battery 11 in the embodiment) provided in the vehicle with electric power, and the external power supply device activates a charging control device provided in the vehicle.
- a signal output unit that outputs either an oscillation signal or a non-oscillation signal as a control signal (for example, the 12V power supply 35 and the oscillation circuit 37 in the embodiment), and the control signal is output when the power supply is ready.
- a switching control unit (for example, the changeover switch 39 and the control circuit 31 in the embodiment) that switches from the oscillation signal to the oscillation signal, and the charge control device is configured to charge the battery.
- a control unit that performs control for example, the control unit 45 in the embodiment
- an activation unit that activates the control unit for example, the activation unit 47 in the embodiment.
- An oscillation state determination unit that determines whether the control signal input from the external power supply device via the power cable is in an oscillation state or a non-oscillation state and outputs an oscillation state determination signal (for example, the oscillation state in the embodiment) When the oscillation state determination signal is switched from a non-oscillation state to an oscillation state, the determination unit 51) and a start signal generation unit (for example, in the embodiment) that generates a start signal for starting the control unit And an activation signal generator 53).
- the charging control device of the invention described in claim 8 even if the oscillation state determination signal remains in the oscillation state after the generation of the activation signal is stopped in response to the clear signal, the activation signal generator is activated. Since no signal is output, the control unit is not restarted. Therefore, the control unit does not consume the electric power of the battery after the end of charging.
- Block diagram showing a vehicle and an external power supply device constituting a charging system The figure which shows the internal structure of the external power supply device 1 and the charge control apparatus 21.
- the figure which shows the relationship between the state of the pilot signal CPL and the state of the starting signal INT including the conditions for the starting part 47 to output the starting signal INT The figure which shows the internal structure of the starting part 47 of 1st Embodiment. Timing chart of pilot signal CPL, start signal INT, and the like when starting control unit 45 of vehicle charge control device 21 in the first embodiment
- the figure which shows the specific circuit structure of the pulse width fixed conversion part 61 Graph of each voltage in the circuit of the pulse width fixed conversion unit 61 shown in FIG.
- FIG. 1 Graph of each voltage in the circuit of the pulse width fixed conversion unit 61 shown in FIG.
- the figure which shows an example of the output signal of the integrator 63, and the output signal of the comparator 65 Timing chart of pilot signal CPL, start signal INT, and the like when starting control unit 45 of vehicle charge control device 21 in the second embodiment The figure which shows the internal structure of the starting part 47 of 3rd Embodiment.
- the figure which shows the specific circuit structure of the frequency dividing circuit 71 The figure which shows the graph of each signal in the starting part 47 of 3rd Embodiment.
- Timing chart of pilot signal CPL, start signal INT, and the like when starting control unit 45 of vehicle charge control device 21 in the third embodiment The figure which shows the internal structure of the starting part 47 of 4th Embodiment. The figure which shows the integrated circuit structure of the count circuit 81, the comparator 65, and D-FF67. Graph of each signal in the starting unit 47 of the fourth embodiment Timing chart of pilot signal CPL, start signal INT, and the like when starting control unit 45 of vehicle charge control device 21 in the fourth embodiment Schematic configuration diagram of a portion related to a charging system for a plug-in hybrid vehicle disclosed in Patent Document 1 The figure for demonstrating in more detail the charging system shown by FIG. An example of a timing chart of pilot signal CPLT shown in FIGS. 22 and 23 The flowchart which shows operation
- FIG. 1 is a block diagram showing a vehicle and an external power supply device constituting a charging system.
- the vehicle constituting the charging system shown in FIG. 1 is a plug-in type EV (Electrical Vehicle) that can charge a battery with electric power supplied via a charging cable 2 from an external power supply 1 connected to a commercial AC power source or the like.
- HEV Hybrid Electrical Vehicle
- the charging cable 2 is connected to the charging connector 3 of the vehicle.
- the vehicle includes a high voltage battery 11, a low voltage battery 13, an AC / DC converter 15, a DC / DC converter 17, a vehicle main switch 19, and a charge control device 21. Note that the above-described charging of the capacitor is charging of the high-voltage battery 11.
- the high voltage battery 11 is a high voltage battery 11 that outputs a DC high voltage such as 100 to 200 V, for example.
- the low voltage battery 13 is a low voltage battery 13 that outputs a DC low voltage such as 12 V, for example.
- the output of the high voltage battery 11 is supplied to a motor (not shown) as a vehicle drive source.
- the output of the low voltage battery 13 is supplied to a controller such as an ECU that controls the charging control device 21 and the entire vehicle.
- the AC / DC converter 15 converts the AC voltage from the external power supply device 1 into a DC voltage and supplies it to the high voltage battery 11.
- the DC / DC converter 17 steps down the output voltage of the high voltage battery 11 and supplies it to the low voltage battery 13.
- the vehicle main switch 19 is an ignition switch for starting the vehicle, or a bypass device that is controlled by the charge control device 21 and bypasses the ignition switch.
- the charging control device 21 controls the charging of the high voltage battery 11 by the electric power from the external power supply device 1. Even when the ignition switch is off, the charging control device 21 is activated by, for example, a pilot signal CPL from the external power supply device 1 and is driven by energizing the low-voltage battery 13 when the bypass device is turned on.
- the charging cable 2 is connected to the charging connector 3 of the vehicle, the external power supply device 1 is connected to the AC / DC converter 15 and also connected to the charging control device 21. Therefore, the charging control device 21 according to the present embodiment is activated by the power supply from the external power supply device 1 by being activated according to the pilot signal CPL from the external power supply device 1 even when the ignition switch is in the OFF state. it can. (See Patent Document 3)
- FIG. 2 is a diagram showing an internal configuration of the external power supply device 1 and the charging control device 21.
- the external power supply device 1 includes a control circuit 31, a main switch 33, a 12V power supply 35, an oscillation circuit 37, and a changeover switch 39.
- the control circuit 31 incorporates a timer (not shown) and controls the changeover switch 39 when the time set in the timer is reached.
- the control circuit 31 performs on / off control of the main switch 33 in accordance with the potential of the pilot signal CPL.
- the main switch 33 is provided on a power transmission path from a commercial AC power source or the like connected via the AC plug 4.
- the 12V power source 35 outputs a 12V DC voltage signal.
- the oscillation circuit 37 outputs an oscillation signal.
- the changeover switch 39 switches the pilot signal CPL input to the charging control device 21 to either a 12 V DC voltage signal (no oscillation signal) or an oscillation signal.
- the charging control device 21 includes an input circuit 41, a buffer circuit 43, a control unit 45, and an activation unit 47.
- the input circuit 41 includes a diode D1 for preventing backflow provided on the control pilot line L1 through which the pilot signal CPL is transmitted, resistors R2 and R3, and a switch S1.
- the resistor R3 is provided between the control pilot line L1 and the ground.
- the resistor R2 and the switch S1 are provided between the control pilot line L1 and the ground in parallel with the resistor R3, and are connected in series.
- the switch S1 is ON / OFF controlled by the control unit 45.
- the buffer circuit 43 converts the pilot signal CPL output from the input circuit 41 and stabilizes it to a constant voltage amplitude.
- the control unit 45 performs on / off control of the switch S1 included in the input circuit 41, generation of a clear signal CLR output to the activation unit 47, charge control of the high voltage battery 11 by switching control of the AC / DC converter 15, and high voltage battery. 11 storage states (such as SOC) are monitored.
- the control unit 45 is activated when a later-described activation signal INT is input.
- the activation unit 47 outputs an activation signal INT according to the oscillation state of the pilot signal CPL.
- the activation signal INT is a signal for activating the control unit 45 that is not operating, and is input to the control unit 45.
- FIG. 3 is a diagram illustrating a relationship between the state of the pilot signal CPL and the state of the activation signal INT including a condition for the activation unit 47 to output the activation signal INT. Note that the left arrow ( ⁇ ) in FIG. 3 indicates that the state of the activation signal INT is not different from the previous state. As indicated by a dotted line in FIG. 3, the activation unit 47 outputs the activation signal INT when the pilot signal CPL changes from the non-oscillation state to the oscillation state.
- FIG. 4 is a diagram illustrating an internal configuration of the activation unit 47 of the first embodiment.
- the activation unit 47 of the first embodiment includes an oscillation state determination unit 51 and an activation signal generation unit 53.
- the oscillation state determination unit 51 determines whether or not the pilot signal CPL whose constant voltage amplitude has been stabilized by the buffer circuit 43 is in an oscillation state.
- oscillation state determining unit 51 outputs a signal indicating that it is in an oscillating state to activation signal generating unit 53.
- Activation signal generator 53 outputs activation signal INT when a signal indicating that pilot signal CPL is in an oscillating state is input when there is no input.
- the activation signal generator 53 stops outputting the activation signal INT when the clear signal CLR is input from the controller 45. Therefore, even if the oscillation state of pilot signal CPL continues, start signal INT can be deleted, and the charging system can be stopped.
- FIG. 5 is a timing chart of the pilot signal CPL, the activation signal INT, and the like when the control unit 45 included in the vehicle charging control device 21 according to the first embodiment is activated. Note that each signal indicated by reference signs a to g in FIG. 5 indicates a signal on the line indicated by the same reference sign shown in FIG.
- pilot signal CPL (signal a) changes from the non-oscillation state to the oscillation state.
- the oscillation state determination unit 51 of the activation unit 47 has a logic state indicating that the pilot signal CPL is in an oscillation state based on the signal b in which the pilot signal CPL is stabilized at a constant voltage amplitude by the buffer circuit 43.
- a (high) signal e is output.
- the activation signal generation unit 53 of the activation unit 47 outputs the activation signal INT (signal f) because the signal e is input.
- the control unit 45 is activated by the activation signal INT.
- the activated control unit 45 turns on the switch S1 of the input circuit 41. As a result, as shown in FIG. 5, the potential of pilot signal CPL (signal a) decreases.
- the control circuit 31 of the external power supply device 1 detects a potential drop in the pilot signal CPL (signal a), it turns on the main switch 33. For this reason, charging of the high voltage battery 11 is started.
- the control unit 45 controls the switch S1 to be off because the high voltage battery 11 has entered a desired state of charge
- the potential of the pilot signal CPL increases as shown in FIG.
- the control circuit 31 of the external power supply device 1 controls the main switch 33 to be turned off
- the supply of power is stopped and the charging of the high voltage battery 11 is ended.
- the control unit 45 inputs the clear signal CLR (signal g) to the activation unit 47 so that the activation unit 47 activates the activation signal INT ( The output of the signal f) can be stopped.
- the control unit 45 since the control unit 45 is stopped, it is possible to prevent the power supply mounted on the vehicle from being consumed.
- the activation unit 47 outputs the activation signal INT (signal f).
- the control unit 45 is not restarted. Therefore, after the charging of the high-voltage battery 11 is completed, the control unit 45 does not consume the power source mounted on the vehicle.
- the charging control device 21 of the vehicle when charging of the high voltage battery 11 provided in the vehicle is performed by timer reservation set in the external power supply device 1, the charging control device 21 of the vehicle is in the low voltage battery 13 during charging standby. Does not consume any power. As described above, even when power is not supplied from the low-voltage battery 13 to the charge control device 21, the pilot signal CPL output from the external power supply device 1 enters an oscillation state at the set time. For this reason, the control part 45 is started by the starting part 47 of the charge control apparatus 21, and charge of the high voltage battery 11 is started. Further, by stopping the control unit 45 at the end of charging, it is possible to prevent the power supply mounted on the vehicle from being consumed.
- the second embodiment is different from the first embodiment in the configuration of the starter included in the vehicle charging control device. Except for this point, the second embodiment is the same as the first embodiment, and the description of the components common to the first embodiment is simplified or omitted.
- FIG. 6 is a diagram illustrating an internal configuration of the activation unit 47 according to the second embodiment.
- the activation unit 47 of the second embodiment includes a pulse width fixed conversion unit 61, an integrator 63, a comparator 65, and a D flip-flop (D-FF) 67.
- the pulse width fixed conversion unit 61 converts the pilot signal CPL stabilized by the constant voltage amplitude by the buffer circuit 43 into a periodic signal having a constant pulse width.
- FIG. 7 shows a specific circuit configuration of the pulse width fixed conversion unit 61. 8 and 9 show graphs of voltages in the circuit of the pulse width fixed conversion unit 61 shown in FIG.
- the integrator 63 accumulates the number of pulses of the periodic signal output from the pulse width fixed conversion unit 61 for a predetermined period.
- the voltage of the signal output from the integrator 63 indicates the number of accumulated pulses.
- 10 and 11 show a specific circuit configuration of the integrator 63.
- the comparator 65 compares the voltage of the signal output from the integrator 63 (hereinafter referred to as “pulse accumulated voltage”) with a reference voltage, and when the pulse accumulated voltage becomes equal to or higher than the reference voltage, the signal whose logic state is H (high). Is output.
- FIG. 12 shows an example of the output signal of the integrator 63 and the output signal of the comparator 65.
- the output signal of the comparator 65 is input to the D-FF 67 as a clock signal.
- the D-FF 67 outputs an activation signal INT when the output signal of the comparator 65 input as a clock signal rises.
- the clear signal CLR output from the control unit 45 is input to the clear terminal of the D-FF 67. When the clear signal CLR is input to the clear terminal, the D-FF 67 stops outputting the activation signal INT.
- FIG. 13 is a timing chart of the pilot signal CPL, the activation signal INT, and the like when the control unit 45 included in the vehicle charging control device 21 according to the second embodiment is activated.
- Each signal indicated by reference signs a to g in FIG. 13 indicates a signal on the line indicated by the same reference sign shown in FIG.
- pilot signal CPL (signal a) changes from the non-oscillation state to the oscillation state.
- the pulse width fixed conversion unit 61 of the starting unit 47 converts the signal b, in which the pilot signal CPL is stabilized at a constant voltage amplitude by the buffer circuit 43, into a periodic signal (signal c) having a constant pulse width.
- the integrator 63 outputs a signal d having a pulse accumulation voltage corresponding to a value obtained by accumulating the number of pulses of the signal c during a predetermined period.
- the comparator 65 outputs a signal e whose logic state is H (high) when the voltage of the signal d (pulse accumulated voltage) becomes equal to or higher than the reference voltage.
- the D-FF 67 outputs an activation signal INT (signal f).
- the control unit 45 is activated by the activation signal INT.
- the activated control unit 45 turns on the switch S1 of the input circuit 41. As a result, as shown in FIG. 13, the potential of pilot signal CPL (signal a) decreases.
- the control circuit 31 of the external power supply device 1 detects a potential drop in the pilot signal CPL (signal a), it turns on the main switch 33. For this reason, charging of the high voltage battery 11 is started.
- the control unit 45 controls the switch S1 to be off because the high voltage battery 11 has entered a desired state of charge
- the potential of the pilot signal CPL increases as shown in FIG.
- the control circuit 31 of the external power supply device 1 controls the main switch 33 to be turned off
- the supply of power is stopped and the charging of the high voltage battery 11 is ended.
- the control unit 45 inputs the clear signal CLR (signal g) to the activation unit 47 so that the activation unit 47 activates the activation signal INT ( The output of the signal f) can be stopped.
- the control unit 45 since the control unit 45 is stopped, it is possible to prevent the power supply mounted on the vehicle from being consumed.
- the activation unit 47 outputs the activation signal INT (signal f).
- the control unit 45 is not restarted. Therefore, after the charging of the high-voltage battery 11 is completed, the control unit 45 does not consume the power source mounted on the vehicle.
- the vehicle charge control device 21 when charging the high-voltage battery 11 included in the vehicle by the timer reservation set in the external power supply device 1, the vehicle charge control device 21 is connected to the low-voltage battery 13 during charging standby. Does not consume power. Further, when the set time is reached and the pilot signal CPL output from the external power supply device 1 is in an oscillating state, charging is started after the number of pulses of the pilot signal CPL reaches a predetermined number. For this reason, charging is not erroneously started by the pilot signal CPL affected by noise or the like.
- the third embodiment is different from the second embodiment in the configuration of the starter included in the vehicle charge control device.
- a frequency dividing circuit is provided instead of the pulse width fixed conversion unit 61 included in the activation unit 47 of the second embodiment.
- the second embodiment is the same as the second embodiment, and the description of components common to the second embodiment is simplified or omitted.
- FIG. 14 is a diagram illustrating an internal configuration of the activation unit 47 of the third embodiment.
- the frequency dividing circuit 71 included in the starting unit 47 of the third embodiment divides the pilot signal CPL that has been stabilized at a constant voltage amplitude by the buffer circuit 43, and has a constant pulse width that is longer than the pilot signal CPL. Outputs a periodic signal.
- FIG. 15 shows a specific circuit configuration of the frequency dividing circuit 71. When the oscillation of the pilot signal CPL is stopped, the frequency-divided signal (signal c) is stopped when the logic state is either H (high) or L (low).
- FIG. 16 shows a graph of each signal in the activation unit 47 of the third embodiment.
- FIG. 17 is a timing chart of the pilot signal CPL, the activation signal INT, and the like when the control unit 45 included in the vehicle charging control device 21 according to the third embodiment is activated. Note that each signal indicated by reference signs a to g in FIG. 17 indicates a signal on the line indicated by the same reference sign shown in FIG.
- pilot signal CPL (signal a) changes from the non-oscillation state to the oscillation state.
- the frequency dividing circuit 71 of the activation unit 47 divides the signal b obtained by stabilizing the constant voltage amplitude of the pilot signal CPL by the buffer circuit 43, and the pulse width longer than the pilot signal CPL has a constant period.
- a signal (signal c) is output. Subsequent signals and processes are the same as those in the second embodiment shown in FIG.
- the vehicle charge control device 21 when charging the high-voltage battery 11 included in the vehicle by the timer reservation set in the external power supply device 1, the vehicle charge control device 21 is connected to the low-voltage battery 13 during charging standby. Does not consume power.
- the set time is reached and the pilot signal CPL output from the external power supply device 1 is in an oscillation state, charging is started after the number of pulses of the divided signal c reaches a predetermined number. Since the integrator 63 accumulates the number of pulses of the frequency-divided signal c, the processing capability of the integrator 63 does not need to be high.
- the fourth embodiment is different from the second embodiment in the configuration of the starter included in the vehicle charge control device.
- a count circuit is provided in place of the pulse width fixed conversion unit 61 and the integrator 63 included in the activation unit 47 of the second embodiment.
- the second embodiment is the same as the second embodiment, and the description of components common to the second embodiment is simplified or omitted.
- FIG. 18 is a diagram illustrating an internal configuration of the activation unit 47 according to the fourth embodiment.
- the counting circuit 81 included in the starting unit 47 of the fourth embodiment counts the number of pulses of the pilot signal CPL whose constant voltage amplitude is stabilized by the buffer circuit 43 during a predetermined time. Note that the voltage of the signal output from the count circuit 81 indicates a count value.
- FIG. 19 shows an integrated circuit configuration of the count circuit 81, the comparator 65, and the D-FF 67. Note that the circuit shown in FIG. 19 includes a 3-bit counter.
- FIG. 20 shows a graph of each signal in the activation unit 47 of the fourth embodiment.
- FIG. 21 is a timing chart of the pilot signal CPL, the activation signal INT, and the like when the control unit 45 included in the vehicle charging control device 21 according to the fourth embodiment is activated.
- Each signal indicated by reference signs a to g in FIG. 21 indicates a signal on the line indicated by the same reference sign shown in FIG.
- pilot signal CPL (signal a) changes from the non-oscillation state to the oscillation state.
- the count circuit 81 of the activation unit 47 counts the number of pulses of the signal b in which the pilot signal CPL is stabilized at a constant voltage amplitude by the buffer circuit 43, and outputs a signal d indicating the count value.
- the comparator 65 outputs a signal e whose logic state is H (high) when the count value indicated by the signal d becomes equal to or greater than the reference numerical value.
- the vehicle charge control device 21 when charging the high-voltage battery 11 included in the vehicle by the timer reservation set in the external power supply device 1, the vehicle charge control device 21 is connected to the low-voltage battery 13 during charging standby. Does not consume power.
- the count circuit 81 counts the number of pulses of the pilot signal CPL, the activation unit 47 does not need to have the integrator 63 as in the second and third embodiments. For this reason, the structure of the starting part 47 can be simplified.
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Abstract
Description
図1は、充電システムを構成する車両及び外部電源装置を示すブロック図である。図1に示す充電システムを構成する車両は、商用交流電源等に接続された外部電源装置1から充電ケーブル2を経由して供給される電力により蓄電器を充電可能なプラグインタイプのEV(Electrical Vehicle)やHEV(Hybrid Electrical Vehicle)である。蓄電器を充電する際、充電ケーブル2が車両の充電コネクタ3に接続される。
第2の実施形態が第1の実施形態と異なる点は、車両の充電制御装置が有する起動部の構成である。この点以外は第1の実施形態と同様であり、第1の実施形態と共通する構成要素に関しては説明を簡略化又は省略する。
第3の実施形態が第2の実施形態と異なる点は、車両の充電制御装置が有する起動部の構成である。第3の実施形態では、第2の実施形態の起動部47が有するパルス幅固定変換部61の代わりに、分周回路が設けられている。この点以外は第2の実施形態と同様であり、第2の実施形態と共通する構成要素に関しては説明を簡略化又は省略する。
第4の実施形態が第2の実施形態と異なる点は、車両の充電制御装置が有する起動部の構成である。第4の実施形態では、第2の実施形態の起動部47が有するパルス幅固定変換部61及び積分器63の代わりに、カウント回路が設けられている。この点以外は第2の実施形態と同様であり、第2の実施形態と共通する構成要素に関しては説明を簡略化又は省略する。
2 充電ケーブル
3 充電コネクタ
11 高圧電池
13 低圧電池
15 AC/DC変換器
17 DC/DC変換器
19 車両メインスイッチ
21 充電制御装置
31 制御回路
33 メインスイッチ
35 12V電源
37 発振回路
39 切替スイッチ
41 入力回路
43 バッファ回路
45 制御部
47 起動部
51 発振状態判断部
53 起動信号発生部
61 パルス幅固定変換部
63 積分器
65 比較器
67 Dフリップフロップ(D-FF)
71 分周回路
81 カウント回路
Claims (10)
- 外部電源装置から電力ケーブルを介して供給される制御信号により車両内部に設けられた蓄電器の充電を制御する充電制御装置であって、前記外部電源装置の電力供給準備が整うと前記外部電源装置は前記制御信号を無発振状態から発振状態へ切り替える充電制御装置において、
前記蓄電器の充電制御を行う制御部と、該制御部を起動する起動部と、を前記車両内部に備え、
前記起動部は、
前記電力ケーブルを介して前記外部電源装置から入力された前記制御信号が発振状態か無発振状態かを判断して、発振状態判定信号を出力する発振状態判断部と、
前記発振状態判定信号が無発振を示す状態から発振を示す状態に切り替わると、前記制御部を起動するための起動信号を発生する起動信号発生部と、
を有することを特徴とする充電制御装置。 - 請求項1に記載の充電制御装置であって、
前記発振状態判断部は、前記制御信号のパルス数が所定数以上になると、前記発振状態判定信号を、無発振を示す状態から発振を示す状態に切り替えることを特徴とする充電制御装置。 - 請求項2に記載の充電制御装置であって、
前記発振状態判断部は、
所定期間の間の前記制御信号のパルス数を累積するパルス積分部と、
前記パルス積分部の累積数と基準値を比較して、前記累積数が前記基準値以上になったときに、前記発振状態判定信号を、無発振を示す状態から発振を示す状態に切り替える比較部と、
を有することを特徴とする充電制御装置。 - 請求項3に記載の充電制御装置であって、
前記発振状態判断部は、
前記制御信号をパルス幅が一定の周期信号に変換するパルス幅固定変換部を有し、
前記パルス積分部は、前記パルス幅固定変換部によって一定のパルス幅に変換された制御信号のパルス数を累積することを特徴とする充電制御装置。 - 請求項3に記載の充電制御装置であって、
前記発振状態判断部は、
前記制御信号を分周する分周部を有し、
前記パルス積分部は、前記分周部によって分周された制御信号のパルス数を累積することを特徴とする充電制御装置。 - 請求項3に記載の充電制御装置であって、
前記パルス積分部は、パルスが入力されるとカウント値を上げ、パルスの入力が停止するとカウント値を下げるカウント回路で構成されることを特徴とする充電制御装置。 - 請求項1~6のいずれか一項に記載の充電制御装置であって、
前記制御部は、前記起動信号発生部が前記起動信号の発生を中止するためのクリア信号を出力することを特徴とする充電制御装置。 - 請求項7に記載の充電制御装置であって、
前記起動信号発生部は、前記クリア信号に応じて前記起動信号の発生を中止した後に前記発振状態判定信号が発振を示す状態のままであっても、前記起動信号の発生を中止した状態を維持することを特徴とする充電制御装置。 - 請求項1~8のいずれか一項に記載の充電制御装置であって、
前記外部電源装置から入力された前記制御信号を変換して定電圧振幅に安定化するバッファ回路部を備え、
前記発振状態判断部には、前記バッファ回路部によって定電圧振幅安定化された制御信号が入力されることを特徴とする充電制御装置。 - 外部電源装置から電力ケーブルを介して供給される電力により車両内部に設けられた蓄電器を充電する充電システムであって、
前記外部電源装置は、
前記車両内部に設けられた充電制御装置を起動するための制御信号として発振信号又は無発振信号のいずれかを出力する信号出力部と、
電力供給の準備が整うと前記制御信号を無発振信号から発振信号に切り替える切替制御部と、を備え、
前記充電制御装置は、
前記蓄電器の充電制御を行う制御部と、該制御部を起動する起動部と、を備え、
前記起動部は、
前記電力ケーブルを介して前記外部電源装置から入力された前記制御信号が発振状態か無発振状態かを判断して、発振状態判定信号を出力する発振状態判断部と、
前記発振状態判定信号が無発振を示す状態から発振を示す状態に切り替わると、前記制御部を起動するための起動信号を発生する起動信号発生部と、
を有することを特徴とする充電システム。
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DE112011102922.5T DE112011102922B4 (de) | 2010-09-03 | 2011-07-29 | Ladesteuergerät und Ladesystem |
US13/820,397 US9071070B2 (en) | 2010-09-03 | 2011-07-29 | Charge controller and charging system |
CN201180041536.2A CN103119823B (zh) | 2010-09-03 | 2011-07-29 | 充电控制装置以及充电*** |
JP2012531761A JP5557920B2 (ja) | 2010-09-03 | 2011-07-29 | 充電制御装置及び充電システム |
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CN103119823A (zh) | 2013-05-22 |
CN103119823B (zh) | 2016-01-20 |
DE112011102922B4 (de) | 2022-09-08 |
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US20130162208A1 (en) | 2013-06-27 |
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US9071070B2 (en) | 2015-06-30 |
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