WO2010125625A1 - 充電コネクタおよび充電ケーブルユニット - Google Patents
充電コネクタおよび充電ケーブルユニット Download PDFInfo
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- WO2010125625A1 WO2010125625A1 PCT/JP2009/058241 JP2009058241W WO2010125625A1 WO 2010125625 A1 WO2010125625 A1 WO 2010125625A1 JP 2009058241 W JP2009058241 W JP 2009058241W WO 2010125625 A1 WO2010125625 A1 WO 2010125625A1
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- Prior art keywords
- power
- vehicle
- charging
- signal
- signal line
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Images
Classifications
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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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- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
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- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
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- 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 connector and a charging cable unit, and more particularly to a charging connector and a charging cable unit for connecting a power supply external to the vehicle to the vehicle in order to charge a power storage device mounted on the vehicle.
- a hybrid vehicle is a vehicle equipped with an internal combustion engine as a power source in addition to an electric motor
- a fuel cell vehicle is a vehicle equipped with a fuel cell as a DC power source for driving the vehicle.
- a vehicle that can charge a power storage device for driving a vehicle mounted on the vehicle from a power source of a general household is known.
- a power outlet provided in a house and a charging port provided in a vehicle with a charging cable electric power is supplied from the power supply of a general household to the power storage device.
- a vehicle that can charge the power storage device mounted on the vehicle from a power source outside the vehicle is also referred to as a “plug-in vehicle”.
- plug-in vehicle standards have already been established in the United States and Japan.
- Patent Document 1 discloses a technique in which a charging connector is provided with illumination.
- An object of the present invention is to provide a charging connector and a charging cable unit that can efficiently drive a load with a simple configuration that does not require maintenance.
- the present invention is a charging connector for connecting a power supply external to a vehicle to charge a power storage device mounted on the vehicle, wherein the vehicle and the power supply send a pilot signal for communicating information. It is connected at the time of charging by a charging cable including a line and a power line for transmitting power.
- the voltage of the pilot signal changes between a high level and a low level whose potential is lower than the high level.
- the charging connector includes a power terminal to which power is supplied from the power line, a signal terminal to which a pilot signal is transmitted from the signal line, and one end coupled to the signal of the signal line, and the other end to a node having a higher potential than the low level And a load including a rectifying element whose forward direction is from the other end to the one end.
- the load is an illumination that is provided on the connector and illuminates a connection provided on the vehicle.
- the rectifying element is a light emitting diode.
- an operation unit for operating the lock between the charging connector and the connection unit provided in the vehicle, and a switch for connecting the signal line and the load according to the operation of the operation unit are further provided.
- the operation unit can be operated in a locked state and a released state.
- the switch connects the signal line and the load in the released state, and electrically isolates the load from the signal line in the locked state.
- the present invention provides a charging cable unit for connecting a power supply external to a vehicle to the vehicle in order to charge a power storage device mounted on the vehicle, a signal line for sending a pilot signal for communicating information, and A power cable for transmitting power is included, and a charging cable for connecting the vehicle and the power supply during charging is provided.
- the voltage of the pilot signal changes between a high level and a low level whose potential is lower than the high level.
- the charging cable unit further includes a charging connector connected to one end of the charging cable and configured to be connectable to a connecting portion provided in the vehicle.
- the charging connector includes a power terminal to which power is supplied from the power line, a signal terminal to which a pilot signal is transmitted from the signal line, and one end coupled to the signal of the signal line, and the other end to a node having a higher potential than the low level And a load including a rectifying element whose forward direction is from the other end to the one end.
- the load is provided on the connector and illuminates a connection provided on the vehicle, and the rectifying element is a light emitting diode.
- the charging cable unit further includes a connection unit connected to a power supply outside the vehicle, and a circuit breaker between the connection unit and the charging connector and connected in series with the charging cable.
- the circuit breaker detects a signal generation circuit that generates a pilot signal, a first resistance element connected between the output of the signal generation circuit and the signal line, and a high-level potential of the signal line.
- the charging connector includes a second resistance element connected in parallel with the load, an operation unit for operating a lock between the charging connector and a connection unit provided in the vehicle, and a signal line according to the operation of the operation unit And a switch for connecting the load connected in parallel with the second resistance element.
- the operation unit can be operated in a locked state and a released state. The switch connects the signal line and the load in the released state, and electrically isolates the load from the signal line in the locked state.
- a load built in the charging connector for example, a power source that secures illumination can be used with high efficiency.
- FIG. 1 is an overall block diagram of a plug-in hybrid vehicle shown as an example of a vehicle to which a charge control device according to an embodiment of the present invention is applied.
- FIG. 6 is a collinear diagram for explaining the operation of a power split mechanism 130. It is a whole block diagram of the electrical system of the plug-in hybrid vehicle shown in FIG. It is a schematic block diagram of the part regarding the charging mechanism of the electric system shown in FIG.
- FIG. 5 is a diagram showing a waveform of a pilot signal CPLT generated by a control pilot circuit 334 shown in FIG.
- FIG. 6 is a diagram showing a relationship between a duty cycle of pilot signal CPLT shown in FIG. 5 and a cable rated current. It is a figure for demonstrating in detail the charging mechanism shown in FIG.
- FIG. 6 is a diagram for explaining the operation of an oscillator 602.
- FIG. It is the figure which showed the outline of the external appearance of the charging cable unit 1000 of this Embodiment.
- FIG. 10 is a circuit diagram showing a configuration of charging connector 310 of FIG. 9.
- FIG. 10 simply shows a configuration for generating the pilot signal CPLT of CCID 330. It is an operation
- FIG. 1 is an overall block diagram of a plug-in hybrid vehicle shown as an example of a vehicle to which a charging control apparatus according to an embodiment of the present invention is applied.
- this plug-in hybrid vehicle includes an engine 100, a first MG (Motor Generator) 110, a second MG 120, a power split mechanism 130, a speed reducer 140, a power storage device 150, and drive wheels 160. And an ECU 170.
- MG Motor Generator
- Engine 100, first MG 110 and second MG 120 are coupled to power split mechanism 130.
- This plug-in hybrid vehicle travels by driving force from at least one of engine 100 and second MG 120.
- the power generated by the engine 100 is divided into two paths by the power split mechanism 130. That is, one is a path transmitted to the drive wheel 160 via the speed reducer 140, and the other is a path transmitted to the first MG 110.
- First MG 110 is an AC rotating electric machine, for example, a three-phase AC synchronous motor including a U-phase coil, a V-phase coil, and a W-phase coil.
- First MG 110 generates power using the power of engine 100 divided by power split device 130.
- SOC State Of Charge
- engine 100 is started and power is generated by first MG 110, and first MG 110 performs power generation.
- the generated power is converted from alternating current to direct current by an inverter (described later), and the voltage is adjusted by a converter (described later) and stored in the power storage device 150.
- Second MG 120 is an AC rotating electric machine, for example, a three-phase AC synchronous motor including a U-phase coil, a V-phase coil, and a W-phase coil. Second MG 120 generates driving force using at least one of the electric power stored in power storage device 150 and the electric power generated by first MG 110. Then, the driving force of second MG 120 is transmitted to driving wheel 160 via reduction gear 140. Thus, second MG 120 assists engine 100 or causes the vehicle to travel with the driving force from second MG 120. In FIG. 1, the driving wheel 160 is shown as a front wheel, but the rear wheel may be driven by the second MG 120 instead of or together with the front wheel.
- the second MG 120 when the vehicle is braked, the second MG 120 is driven by the drive wheels 160 via the speed reducer 140, and the second MG 120 operates as a generator. Thus, second MG 120 operates as a regenerative brake that converts braking energy into electric power. The electric power generated by second MG 120 is stored in power storage device 150.
- the power split mechanism 130 includes a planetary gear including a sun gear, a pinion gear, a carrier, and a ring gear.
- the pinion gear engages with the sun gear and the ring gear.
- the carrier supports the pinion gear so as to be capable of rotating, and is connected to the crankshaft of engine 100.
- the sun gear is connected to the rotation shaft of first MG 110.
- the ring gear is connected to the rotation shaft of second MG 120 and speed reducer 140.
- FIG. 2 is a collinear diagram for explaining the function of the power split mechanism 130. As shown in FIG. 2, engine 100, first MG 110, and second MG 120 are connected via a power split mechanism 130 that includes planetary gears. In the diagram, the relationship is a straight line.
- power storage device 150 is a chargeable / dischargeable DC power supply, and includes, for example, a secondary battery such as nickel metal hydride or lithium ion.
- the voltage of power storage device 150 is, for example, about 200V.
- power storage device 150 in addition to the power generated by first MG 110 and second MG 120, power supplied from a power source outside the vehicle is stored as will be described later.
- a large-capacity capacitor can also be used as power storage device 150, and the power generated by first MG 110 and second MG 120 and the power from the power source outside the vehicle can be temporarily stored, and the stored power can be supplied to second MG 120. Any power buffer may be used.
- ECU 170 Engine 100, first MG 110 and second MG 120 are controlled by ECU 170.
- ECU 170 may be divided into a plurality of ECUs for each function such as engine control, motor control, and voltage control.
- FIG. 3 is an overall configuration diagram of the electrical system of the plug-in hybrid vehicle shown in FIG. Referring to FIG. 3, this electric system includes power storage devices 150-152, SMR (System Main Relay) 250-252, converters 200, 201, inverter 210, inverter 220, first MG 110, and second MG 120.
- SMR 250 is provided between power storage device 150 and converter 200.
- SMR 250 is a relay for electrically connecting / disconnecting power storage device 150 and the electric system, and is controlled to be turned on / off by ECU 170. That is, SMR 250 is turned on when the vehicle is running and when power storage device 150 is charged from a power source external to the vehicle, and power storage device 150 is electrically connected to the electrical system. On the other hand, when the vehicle system is stopped, SMR 250 is turned off, and power storage device 150 is electrically disconnected from the electric system.
- Converter 200 includes a reactor, two npn transistors, and two diodes.
- Reactor has one end connected to the positive electrode side of power storage device 150 and the other end connected to a connection node of two npn transistors.
- Two npn transistors are connected in series, and a diode is connected in antiparallel to each npn transistor.
- an IGBT Insulated Gate Bipolar Transistor
- a power switching element such as a power MOSFET (Metal Oxide Semiconductor Field-Effect Transistor) may be used.
- converter 200 When power is supplied from power storage device 150 to first MG 110 or second MG 120, converter 200 boosts the power discharged from power storage device 150 based on a control signal from ECU 170 and supplies the boosted power to first MG 110 or second MG 120. . In addition, when charging power storage device 150, converter 200 steps down the power supplied from first MG 110 or second MG 120 and outputs the reduced power to power storage device 150.
- SMR 251 is provided between power storage device 151 and converter 201, and SMR 252 is provided between power storage device 152 and converter 201.
- SMRs 251 and 252 are relays for electrical connection / disconnection between power storage devices 151 and 152 and the electrical system, respectively, and are on / off controlled by ECU 170.
- Converter 201 performs voltage conversion between one voltage of power storage devices 151 and 152 selected by SMRs 251 and 252 and a voltage applied from inverter 202 to inverters 210 and 220.
- SMRs 250 to 252 are all turned off, and power storage devices 150 to 152 are electrically disconnected from the electric system.
- Converter 200 includes a reactor, two npn transistors, and two diodes. Reactor has one end connected to the positive electrode side of power storage device 150 and the other end connected to a connection node of two npn transistors. Two npn transistors are connected in series, and a diode is connected in antiparallel to each npn transistor. Since converter 201 has a similar configuration, description of the configuration will not be repeated.
- an IGBT Insulated Gate Bipolar Transistor
- a power switching element such as a power MOSFET (Metal Oxide Semiconductor Field-Effect Transistor) may be used.
- the inverter 210 includes a U-phase arm, a V-phase arm, and a W-phase arm.
- the U-phase arm, V-phase arm, and W-phase arm are connected in parallel to each other.
- Each phase arm includes two npn-type transistors connected in series, and a diode is connected in antiparallel to each npn-type transistor.
- the connection point of the two npn-type transistors in each phase arm is connected to the corresponding coil end in the first MG 110 and an end different from the neutral point 112.
- inverter 210 converts the DC power supplied from converter 200 into AC power and supplies it to first MG 110. Inverter 210 converts AC power generated by first MG 110 into DC power and supplies it to converter 200.
- Inverter 220 has the same configuration as inverter 210, and the connection point of the two npn transistors in each phase arm is connected to the corresponding coil end in second MG 120 and an end different from neutral point 122. .
- Inverter 220 converts the DC power supplied from converter 200 into AC power and supplies the AC power to second MG 120. Inverter 220 converts AC power generated by second MG 120 into DC power and supplies it to converter 200.
- charger 255 converts AC power supplied from the power source external to the vehicle into DC power based on a control signal from ECU 170, and The converted DC power is supplied to the power line pair between the converter 201 and the SMRs 251 and 252.
- the DFR 260 is provided between a power line pair between the converter 201 and the SMRs 251 and 252 and a power line pair connected to the LC filter 280.
- the DFR 260 is a relay for electrically connecting / disconnecting the charging inlet 270 and the electric system, and is turned on / off by the ECU 170. In other words, when the vehicle is traveling, DFR 260 is turned off and electrical system and charging inlet 270 are electrically disconnected. On the other hand, when power storage device 150 is charged from a power supply outside the vehicle, DFR 260 is turned on and charging inlet 270 is electrically connected to the electrical system.
- the LC filter 280 is provided between the DFR 260 and the charging inlet 270.
- the charging inlet 270 is a power interface for receiving charging power from a power source outside the vehicle.
- charging inlet 270 is connected to a connector of a charging cable for supplying power from the power source outside the vehicle to the vehicle.
- ECU 170 generates control signals for driving SMR 250, converter 200, inverter 210 and inverter 220, and controls the operation of each of these devices.
- the charging lid detection device 290 detects the open / closed state of the lid (charge lid) of the opening in which the charging inlet 270 is stored, and outputs a lid signal LID indicating the open / closed state to the ECU 170.
- the vehicle speed detection device 292 detects the vehicle speed SV of the plug-in hybrid vehicle and outputs the detected value to the ECU 170.
- FIG. 4 is a schematic configuration diagram of a portion related to the charging mechanism of the electrical system shown in FIG.
- charging cable 300 that connects the plug-in hybrid vehicle and the power supply outside the vehicle includes a charging connector 310, a plug 320, and a CCID (Charging Circuit Interrupt Device) 330.
- CCID Charging Circuit Interrupt Device
- the charging connector 310 is configured to be connectable to a charging inlet 270 provided in the vehicle.
- the charging connector 310 is provided with a limit switch 312. When charging connector 310 is connected to charging inlet 270, limit switch 312 is activated, and cable connection signal CNCT indicating that charging connector 310 is connected to charging inlet 270 is input to ECU 170.
- the plug 320 is connected to a power outlet 400 provided in a house, for example.
- AC power is supplied to the power outlet 400 from a power source 402 (for example, a system power source).
- CCID 330 includes a relay 332 and a control pilot circuit 334.
- Relay 332 is provided on a pair of power lines for supplying charging power from power supply 402 to the plug-in hybrid vehicle.
- Relay 332 is on / off controlled by control pilot circuit 334, and when relay 332 is off, the electric path for supplying power from power supply 402 to the plug-in hybrid vehicle is cut off.
- relay 332 when relay 332 is turned on, power can be supplied from power supply 402 to the plug-in hybrid vehicle.
- the control pilot circuit 334 operates with power supplied from the power source 402 when the plug 320 is connected to the power outlet 400.
- Control pilot circuit 334 generates pilot signal CPLT transmitted to ECU 170 of the vehicle via the control pilot line, charging connector 310 is connected to charging inlet 270, and the potential of pilot signal CPLT is set to a specified value.
- the pilot signal CPLT is oscillated at a prescribed duty cycle (ratio of the pulse width to the oscillation period).
- This duty cycle is set based on the rated current that can be supplied from the power source 402 to the vehicle via the charging cable 300.
- FIG. 5 is a diagram showing a waveform of pilot signal CPLT generated by control pilot circuit 334 shown in FIG.
- pilot signal CPLT changes periodically with a prescribed period T.
- the pulse width Ton of pilot signal CPLT is set based on the rated current that can be supplied from power supply 402 to vehicle through charging cable 300. Then, the rated current is notified from the control pilot circuit 334 to the ECU 170 of the vehicle using the pilot signal CPLT by the duty cycle indicated by the ratio of the pulse width Ton to the period T.
- the rated current is determined for each charging cable, and if the type of charging cable is different, the rated current is also different, so the duty cycle of the pilot signal CPLT is also different.
- the ECU 170 of the vehicle receives the pilot signal CPLT transmitted from the control pilot circuit 334 provided in the charging cable 300 via the control pilot line, and detects the duty cycle of the received pilot signal CPLT.
- the rated current that can be supplied from the power source 402 to the vehicle via the charging cable 300 can be detected.
- FIG. 6 is a diagram showing the relationship between the duty cycle of pilot signal CPLT shown in FIG. 5 and the cable rated current.
- the horizontal axis represents the cable rated current
- the vertical axis represents the duty cycle (%).
- the duty cycle is 10%
- the duty cycle is 50%
- the cable rated current is 48A.
- the duty cycle is 80%.
- SAEJ1772 SAEJ1772
- the longer the duty cycle the longer the time for driving the load. For example, when lighting such as an LED is turned on, the lighting becomes brighter as the duty cycle increases. However, as shown in FIG. 6, the region where the duty cycle exceeds 50% is the region where the cable rated current exceeds 30A.
- Such a current value is not often used when charging a vehicle from a household outlet.
- the cable rated current is mainly 20 A or less, so the duty cycle is less than 50% under normal circumstances.
- the direction of the light emitting diode is determined so that it is not lit when the pilot signal CPLT is at a high level, but is lit when the pilot signal CPLT is at a low level.
- the duty cycle of the pilot signal CPLT is smaller than 50%, the illumination can be turned on brightly.
- control pilot circuit 334 turns on relay 332 when the vehicle is ready for charging.
- a voltage sensor 171 and a current sensor 172 are provided on the vehicle side.
- Voltage sensor 171 detects voltage VAC between the power line pair between charging inlet 270 and LC filter 280 and outputs the detected value to ECU 170.
- Current sensor 172 detects current IAC that flows from DFR 260 toward charger 255 through one of the power line pairs, and outputs the detected value to ECU 170.
- FIG. 7 is a diagram for explaining the charging mechanism shown in FIG. 4 in more detail.
- CCID 330 includes an electromagnetic coil 606 and a leakage detector 608 in addition to relay 332 and control pilot circuit 334.
- Control pilot circuit 334 includes an internal power supply 601, an oscillator 602, a resistance element R 1, and a voltage detection unit 604.
- the oscillator 602 is operated by the power supply voltage generated by the internal power supply 601 based on the power supplied from the power supply 402.
- FIG. 8 is a diagram for explaining the operation of the oscillator 602.
- oscillator 602 outputs a non-oscillating signal when the potential of pilot signal CPLT detected by voltage detector 604 is in the vicinity of a prescribed potential V1 (for example, 12 ⁇ 0.6 V).
- V1 for example, 12 ⁇ 0.6 V
- a signal that oscillates at a specified frequency for example, 1 kHz
- a duty cycle is output.
- the potential of pilot signal CPLT is manipulated by switching the resistance value of resistance circuit 502 of ECU 170, as will be described later.
- the duty cycle is set based on the rated current that can be supplied from the power supply 402 to the vehicle via the charging cable.
- control pilot circuit 334 supplies a current to the electromagnetic coil 606 when the potential of the pilot signal CPLT is in the vicinity of a specified potential V3 (for example, 6V ⁇ 1V).
- V3 for example, 6V ⁇ 1V.
- Leakage detector 608 is provided in charging cable CC including a power line pair for supplying charging power from power supply 402 to the plug-in hybrid vehicle, and detects the presence or absence of leakage. Specifically, the leakage detector 608 detects an equilibrium state of currents flowing in opposite directions to the HOT line LH and the COLD line LC included in the charging cable CC, and detects the occurrence of leakage when the equilibrium state breaks down. To do. Although not particularly illustrated, when leakage is detected by leakage detector 608, power supply to electromagnetic coil 606 is interrupted and relay 332 is turned off.
- the ECU 170 includes a resistance circuit 502, a connection circuit 504, a voltage generation circuit 506, input buffers 508 and 510, and CPUs (Control Processing Units) 512 and 514.
- the resistance circuit 502 includes pull-down resistors R2 and R3 and a switch SW1.
- Pull-down resistor R2 and switch SW1 are connected in series between control pilot line L1 through which pilot signal CPLT is communicated and vehicle ground 518.
- Pull-down resistor R3 is connected between control pilot line L1 and vehicle ground 518.
- the pull-down resistor R3 is connected in parallel to the pull-down resistor R2 and the switch SW1 connected in series.
- the switch SW1 is turned on / off according to a control signal from the CPU 512.
- the resistance circuit 502 switches the potential of the pilot signal CPLT when the switch SW1 is turned on / off according to a control signal from the CPU 512. That is, if switch SW1 is turned off according to the control signal from CPU 512, the potential of pilot signal CPLT is set to a prescribed potential V2 (for example, 9V) by pull-down resistor R3. When switch SW1 is turned on according to the control signal from CPU 512, the potential of pilot signal CPLT is set to a prescribed potential V3 (for example, 6V) by pull-down resistors R2 and R3.
- V2 for example, 9V
- the connection circuit 504 includes a switch SW3.
- Switch SW 3 is connected between signal line L 2 branched from input terminal T 1 of pilot signal CPLT in charging inlet 270 and ground line L 3 connected to vehicle ground 518.
- the switch SW3 is turned on / off according to a control signal from the CPU 512.
- the connection circuit 504 is provided to detect disconnection of the control pilot line L1 through which the pilot signal CPLT is communicated. That is, when the charging connector 310 is not connected to the charging inlet 270, the control pilot line L1 is divided by the pull-up resistors R4 to R6 in the voltage generation circuit 506 and the pull-down resistor R7 connected to the vehicle ground 518. Voltage is generated. If the potential of the control pilot line L1 drops to the ground level when the switch SW3 of the connection circuit 504 is turned on, it can be determined that the control pilot line L1 is normal. On the other hand, if the potential of control pilot line L1 does not drop to the ground level even when switch SW3 is turned on, it can be determined that control pilot line L1 is disconnected in the vehicle.
- the voltage generation circuit 506 includes a power supply node 516, pull-up resistors R4 to R6, and a diode D3.
- This voltage generation circuit 506 includes a voltage at power supply node 516 (for example, 12V), pull-up resistors R4 to R6, and pull-down resistor R7 connected to vehicle ground 518 when charging connector 310 is not connected to charging inlet 270.
- a fixed voltage is generated on the control pilot line L1.
- the input buffer 508 receives the pilot signal CPLT of the control pilot line L1, and outputs the received pilot signal CPLT to the CPU 512.
- Input buffer 510 receives cable connection signal CNCT from signal line L4 connected to limit switch 312 of charging connector 310, and outputs the received cable connection signal CNCT to CPU 514.
- the cable connection signal CNCT is a signal that is at L (logic low) level when the charging connector 310 is connected to the charging inlet 270 and is at H (logic high) level when not connected.
- the CPU 514 receives the cable connection signal CNCT from the input buffer 510 and determines the connection between the charging connector 310 and the charging inlet 270 based on the received cable connection signal CNCT. Then, CPU 514 outputs the determination result to CPU 512.
- the CPU 512 receives the pilot signal CPLT from the input buffer 508, and receives a connection determination result between the charging connector 310 and the charging inlet 270 from the CPU 514. Then, CPU 512 detects a rated current that can be supplied from power supply 402 to the plug-in hybrid vehicle based on pilot signal CPLT that has started oscillating in response to charging connector 310 being connected to charging inlet 270.
- the CPU 512 activates the control signal output to the switch SW1, and turns on the DFR 260 in FIG. Thereby, AC power from power supply 402 is applied to neutral point 112 of first MG 110 and neutral point 122 of second MG 120, and charging control of power storage device 150 is executed.
- lighting is attached to the charging connector in order to support night charging of the plug-in vehicle.
- a light emitting diode can be used for the illumination. Lighting power is supplied using existing wiring.
- FIG. 9 is a diagram showing an outline of the appearance of the charging cable unit 1000 of the present embodiment.
- charging cable unit 1000 includes a plug 320 for connecting to a power source outside the vehicle, CCID 330, charging cable CC, and charging connector 310.
- Charging connector 310 has a connecting portion 713 that connects to the vehicle. Illumination is provided on the charging connector 310 so as to illuminate the same direction as the direction in which the connecting portion 713 is connected.
- the charging connector 310 is connected to one end of the charging cable CC.
- a plug 320 is connected to the other end of the charging cable CC as a connection unit for connecting to a power source.
- a CCID 330 that is a leakage breaker is provided between the charging connector 310 and the plug 320 in the charging cable CC.
- the charging connector 310 is provided with a lock button 712.
- a locking mechanism (not shown) is provided so that once the charging connector 310 is connected to the vehicle, the connector does not come out even if a force is applied to pull it out thereafter.
- the lock button 712 is pressed, the connected charging connector 310 can be separated from the vehicle.
- FIG. 10 is a circuit diagram showing the configuration of the charging connector 310 of FIG.
- FIG. 10 simply shows a configuration for generating the pilot signal CPLT of CCID 330.
- charging connector 310 has a terminal T1 for outputting pilot signal CPLT to the vehicle, a terminal T3 for giving a ground level to the vehicle, and a signal line for transmitting pilot signal CPLT from CCID 330 to charging connector 310.
- a switch 710 that selectively connects the LS to either the terminal T1 or the light emitting diode 700 is included. The switch 710 is switched in conjunction with a lock button 712 that fixes the charging connector 310 to the vehicle.
- the charging connector 310 further includes a resistor 702 and a diode 704 connected in series connected in parallel to the light emitting diode 700.
- the direction from the ground line connected to the terminal T3 toward the switch 710 is set to the forward direction.
- the diode 704 is connected such that the direction from the switch 710 toward the ground line is the forward direction.
- the lock button 712 When the lock button 712 is pressed, a lock mechanism (not shown) is released and the charging connector 310 can be detached from the vehicle. In this case, the switch 710 is switched so that the signal line LS and the light emitting diode 700 are connected.
- the charging connector 310 when the charging connector 310 is connected to the vehicle in a state where the button 712 is released, the charging connector 310 cannot be released from the vehicle due to the locking mechanism. In this state, the switch 710 is switched so that the signal line LS for transmitting the signal CPLT is connected to the terminal T1.
- the CCID 330 includes an oscillator 602 that outputs a signal (VCPLT1) that is a source of the pilot signal CPLT, a resistor R1 that is connected to the output of the oscillator 602, and a capacitor C1 that is connected between the output of the oscillator 602 and the ground node. And a voltage detection unit 604.
- the voltage detection unit 604 detects the voltage VCLPT2 of the signal line LS that transmits the pilot signal CPLT from the CCID to the charging connector 310.
- the switch 710 selects the terminal T1 side
- the voltage divided by the resistance division of the resistor (the combined resistance value of R2 and R3 in FIG. 7) and the resistor R1 provided at the end of the terminal T1 Becomes the voltage VCPLT2.
- the switch 710 selects the light emitting diode 700 side
- the voltage detection unit 604 detects the voltage divided by the resistance division of the resistor R1 and the resistor 702.
- the oscillator 602 initially outputs + 12V.
- the oscillator 602 outputs a signal that oscillates between + 12V and ⁇ 12V.
- the voltage VCPLT2 is set to + 9V by the resistor 702.
- the oscillator 602 outputs a signal that oscillates between + 12V and ⁇ 12V, so that the light emitting diode 700 is lit during a period in which the oscillator 602 outputs ⁇ 12V.
- FIG. 11 is an operation waveform diagram for explaining the operation of the present embodiment when the rated current of the cable is 12A.
- the rated current 12A is an example, and a cable with an appropriate rating is selected depending on the capacity of the outlet on the house side.
- VCPLT2 which is the output of the oscillator 602 is 12V
- VCPLT2 detected by the voltage detection unit 604 is also 12V.
- the voltage divided by the resistor R1 and the resistor 702 becomes the voltage VCPLT2.
- the resistor R1 is 1 K ⁇ and the resistor 702 is 3 K ⁇ , the divided voltage is 9V.
- the oscillator 602 starts oscillating with an amplitude of ⁇ 12V. In this case, oscillation with a duty cycle of 20% is performed in accordance with the rating of the cable.
- the voltage VCPLT1 repeats a waveform of 80% low level ( ⁇ 12V) and 20% high level (12V).
- a forward current flows through the light emitting diode 700 during a period t2 to t3 in which the voltage VCPLT2 is lower than 0V. For this reason, the light-emitting diode 700 is turned on from time t2 to t3.
- the voltage VCPLT2 is a value that is lowered by the forward voltage VF of the light emitting diode from the ground line (0V) connected to the terminal T3.
- the voltage VCPLT2 is ⁇ 0.5V between times t2 and t3.
- the voltage VCPLT2 is a positive value, so that no current flows through the light emitting diode 700. Instead, the diode 704 is turned on and the voltage divided between the resistor 702 and the resistor R1 (in FIG. 11). 9V).
- the light emitting diode 700 can be connected in the direction shown in FIG. 10 to light up more brightly than in the opposite direction. it can.
- Charging connector is a charging connector 310 for connecting a power supply external to the vehicle to charge a power storage device mounted on the vehicle.
- the vehicle and the power supply are pilot signals CPLT for communicating information.
- a charging cable CC including a signal line LS for transmitting and a power line for transmitting power.
- Pilot signal CPLT changes in voltage between a high level and a low level whose potential is lower than the high level.
- Charging connector 310 has power terminals (TH and TC in FIG. 7) to which power is supplied from the power line, signal terminal T1 to which pilot signal CPLT from signal line LS is transmitted, and one end of the signal on signal line LS.
- a load including a rectifying element having a forward direction in which the other end is coupled to the coupled node (T3) having a potential higher than the low level and the other end is coupled to the one end.
- the load is provided on the charging connector 310 and illuminates a connection provided on the vehicle, and the rectifying element is the light emitting diode 700.
- the charging connector further includes a lock button 712 for locking the charging connector to a connecting portion provided in the vehicle, and a switch 710 for connecting the signal line LS and the load in response to an operation of the lock button 712. .
- the lock button 712 can be operated in a locked state and a released state, and the switch 710 connects the signal line LS and the load in the released state, and electrically isolates the load from the signal line LS in the locked state.
- a charging cable unit including the charging connector and the charging cable.
- the charging cable unit includes a connection unit (plug 320 in FIG. 9) connected to a power source outside the vehicle, and a circuit breaker (in series) connected between the connection unit and the charging connector 310 and the charging cable CC. CCID).
- the circuit breaker includes a signal generation circuit (oscillator 602) that generates a pilot signal CPLT, a first resistance element (resistance R1) connected between the output of the signal generation circuit and the signal line LS, And a voltage detection unit 604 that detects a high-level potential of the signal line LS.
- the charging connector 310 includes a second resistance element (resistor 702) connected in parallel with the load, a lock button 712 for locking the charging connector 310 to a connection portion provided in the vehicle, and an operation of the lock button 712. And a switch 710 connecting the load connected in parallel with the signal line LS and the second resistance element.
- the lock button 712 can be operated in a locked state and a released state, and the switch 710 connects the signal line LS and the load in the released state, and electrically isolates the load from the signal line LS in the locked state.
- the illumination power source can be secured at a low cost without additionally providing a rectifier circuit or the like. Also, the forward direction of the light emitting diode is set to turn on when the pilot signal CPLT is at a negative level, and the voltage detected by the voltage detection circuit is not affected, so the type and number of LEDs can be easily changed. It becomes.
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Abstract
Description
図1は、この発明の実施の形態による充電制御装置が適用された車両の一例として示されるプラグインハイブリッド車の全体ブロック図である。
図2に示すように、エンジン100、第1MG110および第2MG120が、遊星歯車で構成される動力分割機構130を介して連結されることによって、エンジン100、第1MG110および第2MG120の回転数は、共線図において直線で結ばれる関係になる。
図3を参照して、この電気システムは、蓄電装置150~152と、SMR(System Main Relay)250~252と、コンバータ200,201と、インバータ210と、インバータ220と、第1MG110と、第2MG120と、DFR(Dead Front Relay)260と、LCフィルタ280と、充電インレット270と、充電リッド検出装置290と、車速検出装置292とを備える。
そして、インバータ220は、コンバータ200から供給される直流電力を交流電力に変換して第2MG120へ供給する。また、インバータ220は、第2MG120により発電された交流電力を直流電力に変換してコンバータ200へ供給する。
図7は、図4に示した充電機構をより詳細に説明するための図である。
図7、図8を参照して、発振器602は、電圧検出部604によって検出されるパイロット信号CPLTの電位が規定の電位V1(たとえば12±0.6V)近傍のときは非発振の信号を出力し、パイロット信号CPLTの電位が電位V1から電位V2(たとえば9±1V)に低下すると、規定の周波数(たとえば1kHz)およびデューティーサイクルで発振する信号を出力する。なお、パイロット信号CPLTの電位は、後述のように、ECU170の抵抗回路502の抵抗値を切替えることによって操作される。また、上述のように、デューティーサイクルは、電源402から充電ケーブルを介して車両へ供給可能な定格電流に基づいて設定される。
本実施の形態では、プラグイン車の夜間充電をサポートするため、充電コネクタに照明を取付ける。照明は、好ましくは発光ダイオードを使用することができる。照明の電源は、既存の配線を利用し供給する。
したがって時刻t2以降、電圧VCPLT1は80%のローレベル(-12V)と20%のハイレベル(12V)の波形の繰返しとなる。このとき、電圧VCPLT2が0Vよりも低くなる区間t2~t3の間は発光ダイオード700に順方向の電流が流れる。このため時刻t2~t3は発光ダイオード700が点灯する。
Claims (7)
- 車両に搭載された蓄電装置を充電するために、車両外部の電源を前記車両に接続する充電コネクタ(310)であって、
前記車両と前記電源とは、情報を通信するパイロット信号を送る信号線(LS)および電力を送る電力線を含んだ充電ケーブル(CC)によって充電時に接続され、
前記パイロット信号は、ハイレベルと、前記ハイレベルよりも電位の低いローレベルとの間で電圧が変化し、
前記充電コネクタ(310)は、
前記電力線から電力が供給される電力端子(TH,TC)と、
前記信号線から前記パイロット信号が伝達される信号端子(T1)と、
前記信号線の信号に一方端が結合され、前記ローレベルよりも電位の高いノード(T3)に他方端が結合され、前記他方端から前記一方端に向かう向きを順方向とする整流素子(700)を含む負荷とを備える、充電コネクタ。 - [規則91に基づく訂正 26.01.2010]
前記負荷は、
前記コネクタに設けられ、前記車両に設けられた接続部を照らす照明であり、
前記整流素子(700)は、発光ダイオードである、請求の範囲第1項に記載の充電コネクタ。 - 前記充電コネクタと前記車両に設けられた接続部との間のロックを操作するための操作部(712)と、
前記操作部の操作に応じて前記信号線と前記負荷とを接続するスイッチ(710)とをさらに備え、
前記操作部は、ロック状態とリリース状態とに操作可能であって、
前記スイッチは、前記リリース状態において前記信号線と前記負荷とを接続し、前記ロック状態において前記負荷を前記信号線から電気的に分離する、請求の範囲第2項に記載の充電コネクタ。 - 車両に搭載された蓄電装置(150,151,152)を充電するために、車両外部の電源を前記車両に接続する充電ケーブルユニット(1000)であって、
情報を通信するパイロット信号を送る信号線(LS)および電力を送る電力線を含み、前記車両と前記電源とを充電時に接続するための充電ケーブル(CC)を備え、
前記パイロット信号は、ハイレベルと、前記ハイレベルよりも電位の低いローレベルとの間で電圧が変化し、
前記充電ケーブルの一端に接続され、車両に設けられた接続部に接続可能に構成された充電コネクタ(310)をさらに備え、
前記充電コネクタは、
前記電力線から電力が供給される電力端子(TH,TC)と、
前記信号線から前記パイロット信号が伝達される信号端子(T1)と、
前記信号線の信号に一方端が結合され、前記ローレベルよりも電位の高いノードに他方端が結合され、前記他方端から前記一方端に向かう向きを順方向とする整流素子(700)を含む負荷とを含む、充電ケーブルユニット。 - 前記負荷は、
前記コネクタに設けられ、前記車両に設けられた前記接続部を照らす照明であり、
前記整流素子(700)は、発光ダイオードである、請求の範囲第4項に記載の充電ケーブルユニット。 - 前記車両外部の前記電源(402)に接続する接続ユニット(320)と、
前記接続ユニットと前記充電コネクタとの間であって前記充電ケーブルと直列に接続される遮断器(330)とをさらに備える、請求の範囲第5項に記載の充電ケーブルユニット。 - 前記遮断器は、
前記パイロット信号を発生する信号発生回路(602)と、
前記信号発生回路の出力と前記信号線との間に接続される第1の抵抗素子(R1)と、
前記信号線のハイレベルの電位を検出する電圧検出部(604)とを含み、
前記充電コネクタは、
前記負荷と並列接続される第2の抵抗素子(702)と、
前記充電コネクタと前記車両に設けられた接続部との間のロックを操作するための操作部(712)と、
前記操作部の操作に応じて前記信号線と並列接続された前記負荷および前記第2の抵抗素子とを接続するスイッチとをさらに含み、
前記操作部は、ロック状態とリリース状態とに操作可能であって、
前記スイッチは、前記リリース状態において前記信号線と前記負荷とを接続し、前記ロック状態において前記負荷を前記信号線から電気的に分離する、請求の範囲第6項に記載の充電ケーブルユニット。
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PCT/JP2009/058241 WO2010125625A1 (ja) | 2009-04-27 | 2009-04-27 | 充電コネクタおよび充電ケーブルユニット |
US13/201,367 US9013142B2 (en) | 2009-04-27 | 2009-04-27 | Charging connector and charging cable unit |
JP2011511196A JP5141818B2 (ja) | 2009-04-27 | 2009-04-27 | 充電コネクタおよび充電ケーブルユニット |
CN200980158959.5A CN102414936B (zh) | 2009-04-27 | 2009-04-27 | 充电连接器以及充电电缆单元 |
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PCT/JP2009/058241 WO2010125625A1 (ja) | 2009-04-27 | 2009-04-27 | 充電コネクタおよび充電ケーブルユニット |
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