WO2015181919A1 - 充電器 - Google Patents
充電器 Download PDFInfo
- Publication number
- WO2015181919A1 WO2015181919A1 PCT/JP2014/064181 JP2014064181W WO2015181919A1 WO 2015181919 A1 WO2015181919 A1 WO 2015181919A1 JP 2014064181 W JP2014064181 W JP 2014064181W WO 2015181919 A1 WO2015181919 A1 WO 2015181919A1
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- WO
- WIPO (PCT)
- Prior art keywords
- power supply
- voltage
- circuit
- stop signal
- charger
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- 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
- B60L53/20—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 converters located in the vehicle
- B60L53/22—Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
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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
- B60L53/60—Monitoring or controlling charging stations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0006—Arrangements for supplying an adequate voltage to the control circuit of converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0083—Converters characterised by their input or output configuration
- H02M1/0085—Partially controlled bridges
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/337—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration
- H02M3/3376—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration with automatic control of output voltage or current
- H02M3/3378—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration with automatic control of output voltage or current in a push-pull configuration of the parallel type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Definitions
- the present invention relates to a charger suitable as an in-vehicle charger or the like.
- EV Electric 2. Description of the Related Art
- a vehicle-mounted charger used in a vehicle (electric vehicle) or the like there is a configuration in which power conversion is performed on electric power supplied from an external power source, and a storage battery in the EV is charged with a DC voltage obtained as a result.
- Some of the on-vehicle chargers of this type include an inverter as a means for power conversion.
- an in-vehicle charger having a configuration including such an inverter
- the output of the inverter may be urgently stopped to avoid an electric shock accident.
- a relay is inserted between the auxiliary power supply of the vehicle and the internal power supply that generates the power supply voltage supplied to the inverter based on the power supply voltage supplied from the auxiliary power supply, and the relay is turned off. As a result, the output of the inverter was urgently stopped.
- this technique is referred to as a first conventional technique.
- the first prior art described above has a problem that the circuit scale increases because it is necessary to provide a relay between the auxiliary power supply and the internal power supply. Further, the first conventional technique has a problem that the number of parts increases by the number of relays, resulting in an increase in manufacturing cost and a high occurrence rate of circuit failure.
- the inverter is provided with a gate drive circuit that amplifies a gate signal supplied via a photocoupler to an appropriate level and supplies the amplified signal to each switching element. If the transmission of the gate signal through the photocoupler is cut off in response to the forced stop signal, this gate drive circuit may become unstable and easily oscillate, and may erroneously drive each switching element of the inverter There is.
- the present invention has been made in view of the circumstances described above, and provides a charger capable of reliably stopping an inverter for power conversion in response to a forced stop signal without causing an increase in the number of components.
- the purpose is that.
- a plurality of switching elements constituting the inverter are switched on / off.
- a plurality of gate drive circuits for outputting a plurality of gate signals for performing; and a control power supply for supplying a power supply voltage to the plurality of gate drive circuits.
- the control power supply includes a transformer and a primary winding of the transformer.
- a power supply control circuit that repeatedly opens and closes a primary circuit formed by connecting a line and a DC power supply in series;
- the power supply control circuit stops opening and closing of the primary circuit of the transformer in response to the forced stop signal, the power supply voltage from the rectifier circuit connected to the secondary winding of the transformer to the gate drive circuit Is stopped. As a result, supply of the gate signal to each switching element constituting the inverter is stopped, and charging of the storage battery is stopped.
- FIG. 1 is a block diagram showing a configuration of an in-vehicle charging system 1 including a charger 11 according to an embodiment of the present invention.
- the in-vehicle charging system 1 includes a charger 11, a junction box 12, a storage battery 13, a BCU (Battery Control Unit) 14 and a charging connector 16 provided in the EV.
- the junction box 12 relays the wiring connected to each of the charger 11, the storage battery 13, and the charging connector 16.
- the BCU 14 monitors the charge / discharge state of the storage battery 13.
- the charging connector 16 is provided to connect a charging plug 18 connected to a quick charger 17a provided outside the EV or an EVSE (Electric Vehicle Service Equipment) 17b to the EV.
- EVSE Electronic Vehicle Service Equipment
- the charger 11 includes a power conversion circuit 101, an initial charging circuit 102, and a control circuit 103.
- the power conversion circuit 101 includes an AC / DC converter 110 and a DC / DC converter 120.
- the initial charging circuit 102 is a charging current supplied to the capacitor 110_7 until the charging voltage of the capacitor 110_7 provided in the AC / DC converter 110 rises to a predetermined voltage value when the charging operation of the charger 11 is started. It is a circuit that restricts.
- the control circuit 103 is connected to the initial charging circuit 102, the AC / DC converter 110, and the DC / DC converter 120, and outputs a control signal to each circuit.
- the control circuit 103 and the BCU 14 perform information transmission by CAN communication via the CAN-BUS 15.
- FIG. 2 is a circuit diagram showing the configuration of the power conversion circuit 101 and the control circuit 103. In order to prevent the drawing from becoming complicated, only the circuit related to the control of the inverter 121 is illustrated as the control circuit 103.
- the AC / DC converter 110 includes diodes 110_1 to 110_2, flywheel diodes 110_3 to 110_4, FETs 110_5 to 110_6, a capacitor 110_7, and reactors 110_8 to 110_9. Reactors 110_8 to 110_9 are provided to attenuate harmonics.
- the diodes 110_1 to 110_2 and the FETs 110_5 to 110_6 constitute a rectifier circuit that rectifies the AC voltage supplied from the quick charger 17a or the EVSE 17b via the initial charging circuit 102 and supplies the DC voltage to the capacitor 110_7.
- Capacitor 110_7 is an electrolytic capacitor provided to smooth the DC voltage output from the rectifier circuit.
- the flywheel diodes 110_3 to 110_4 are connected in reverse parallel to the FETs 110_5 to 110_6, and return current generated by electromagnetic energy accumulated in the reactors 110_8 to 110_9 to the input power source when the FETs 110_5 to 110_6 are switched on / off. .
- the DC / DC converter 120 includes an inverter 121 and a rectifier 122.
- the inverter 121 includes FETs 121_5 to 121_8, flywheel diodes 121_1 to 121_4, and a transformer 121_9.
- the inverter 121 uses a DC voltage charged in the capacitor 110_7 of the AC / DC converter 110 as a power supply voltage, and switches the power supply voltage using the FETs 121_5 to 121_8, thereby outputting an AC voltage to the primary winding of the transformer 121_9. It is.
- the transformer 121_9 outputs an AC voltage corresponding to the AC voltage applied to the primary winding from the secondary winding to the rectifier 122.
- the rectifier 122 rectifies the AC voltage output from the secondary winding of the transformer 121_9 by the diodes 122_1 to 122_4 and supplies the DC voltage to the storage battery 13.
- the control circuit 103 includes gate drive circuits 21a to 21d and a control power supply 3.
- the gate drive circuits 21a to 21d receive gate signals G1 to G4 at levels suitable for on / off switching of the FETs 121_5 to 121_8 in accordance with pulse width modulated gate signals g1 to g4 generated by a gate signal generator (not shown). Generated and output to the gates of the FETs 121_5 to 121_8.
- FIG. 3 is a circuit diagram showing the configuration of the control power supply 3.
- the control power supply 3 is a circuit that operates using an input power supply voltage supplied to the power supply input terminal 301 and generates a power supply voltage supplied to the gate drive circuits 21a to 21d and a power supply voltage supplied to other circuits.
- the auxiliary power source is connected to the power input terminal 301.
- This auxiliary machine power supply is a power supply provided to supply power to an auxiliary machine of a vehicle equipped with the in-vehicle charging system 1 such as an air conditioner or a car stereo.
- the auxiliary power supply voltage value is 12V.
- the control power supply 3 includes a transistor 302, a power supply control IC 304, an FET 305, a transformer 306, a resistor 307, a capacitor 308, rectifiers 309a to 309c, and a flywheel diode 315.
- the capacitor 308 is interposed between the input power terminal 301 and the ground line.
- the capacitor 308 is for removing noise from the power supply voltage applied to the input power supply terminal 301.
- the transformer 306 has one primary winding 306a and three secondary windings 306b, 306c, and 306d.
- one end of the primary winding 306 a is connected to the auxiliary power supply via the input power supply terminal 301, and the other end is connected to the drain of the FET 305.
- the source of the FET 305 is grounded.
- a flywheel diode 315 is connected in reverse parallel to the FET 305.
- a primary side circuit is formed by connecting the auxiliary power source connected to the input power source terminal 301, the primary winding 306a of the transformer 306, and the FET 305 in series.
- the secondary winding 306b has one end grounded and the other end connected to the power control IC 304 via a rectifier circuit 309c including a capacitor 313c and a diode 314c.
- the NPN transistor 302 has an emitter grounded and a collector connected to the input power supply terminal 301 via a resistor 307.
- the NPN transistor 302 is turned on / off by a host ECU (Engine / Control / Unit) 200 provided in the vehicle.
- the host ECU 200 is connected to a ground line common to the primary circuit of the transformer 306 in the control power supply 3.
- the host ECU 200 turns on the NPN transistor 302.
- the host ECU 200 turns off the NPN transistor 302.
- the forced stop signal is generated, for example, in response to an operation of an operator provided in a charging station outside the vehicle, and supplied to the host ECU 200.
- a forced stop signal is generated based on a failure detection signal generated at that time.
- the power supply control IC 304 is a PWM (Pulse An IC having a Width Moduration function, for example, a microcomputer.
- the power supply control IC 304 determines the presence or absence of the forced stop signal by comparing the collector voltage of the NPN transistor 302 with a predetermined threshold value. In a normal operation in which no forced stop signal is generated, the power supply control IC 304 periodically opens and closes the primary side circuit including the primary winding 306a by applying a pulse train having a constant cycle to the gate of the FET 305. As a result, an AC voltage is output from the secondary windings 306b, 306c, and 306d.
- the AC voltage output from the secondary winding 306b is rectified by the rectifier circuit 309c and supplied to the power supply control IC 304 as a DC voltage.
- the power supply control IC 304 controls the pulse width of the pulse train supplied to the FET 305 so that the DC voltage supplied via the rectifier circuit 309c becomes a predetermined target value.
- the power supply control IC 304 detects the generation of the forced stop signal based on the collector voltage of the NPN transistor 302, the power supply control IC 304 stops supplying the pulse train to the gate of the FET 305 and forcibly turns off the FET 305. As a result, the primary circuit including the primary winding 306a is opened, and the output of the AC voltage from the secondary windings 306b, 306c, and 306d is stopped.
- the rectifier 309a includes a capacitor 313a and a diode 314a, and rectifies the AC voltage output from the secondary winding 306c of the transformer 306 and converts it into a DC voltage.
- the rectifier 309b is composed of a capacitor 313b and a diode 314b, and rectifies the AC voltage output from the second secondary winding 306d of the transformer 306 and converts it into a DC voltage.
- the output voltage of the rectifier circuit 309a is supplied as a power supply voltage to the gate drive circuits 21a to 21d
- the output voltage of the rectifier circuit 309b is supplied as a power supply voltage to circuits other than the gate drive circuits 21a to 21d.
- FIG. 1 in order to charge the storage battery 13, an operator connects the charging plug 18 connected to the quick charger 17 a or the EVSE 17 b to the EV charging connector 16. At this time, an instruction to start charging is transmitted from the EV, and charging of the storage battery 13 is started under the monitoring of the charging / discharging state by the BCU 14. The AC voltage output from the quick charger 17 a or the like is input to the charger 11 via the charging connector 16.
- AC voltage input to the charger 11 is applied to the AC / DC converter 110 via the initial charging circuit 102 shown in FIG.
- the AC voltage that has passed through the initial charging circuit 102 is rectified by the AC / DC converter 110, and the resulting DC voltage is charged in the capacitor 110_7.
- the DC voltage charged in the capacitor 110_7 of the AC / DC converter 110 is supplied to the inverter 121 as a power supply voltage.
- Gate signals G1 to G4 are applied to the FETs 121_5, 121_6, 121_7, and 121_8 of the inverter 121 from the gate drive circuits 21a to 21d, respectively. More specifically, the gate drive circuits 21a to 21d change the gate signals G1 to G4 to alternately turn on the pair of FETs 121_5 and 121_8 and the pair of FETs 121_7 and 121_6, and turn them on to the primary winding of the transformer 121_9. In contrast, an AC voltage is output.
- the AC voltage of the secondary winding is rectified by the rectifier 122 and converted into a DC voltage.
- This DC voltage is output to the storage battery 13 via the junction box 12 shown in FIG. 1, and the storage battery 13 is charged.
- the power supply control IC 304 outputs a pulse train for turning on / off the FET 305.
- an AC voltage is applied to the primary winding 306a of the transformer 306, and an AC voltage is output from the secondary windings 306b, 306c, and 306d of the transformer 306.
- the AC voltages output from the secondary windings 306c and 306d are rectified by rectifier circuits 309a and 309b, and converted into DC voltages, respectively.
- the DC voltage output from the rectifier circuit 309a is supplied to the gate drive circuits 21a to 21d as a power supply voltage.
- the host ECU 200 turns off the transistor 302.
- the power supply control IC 304 stops outputting the pulse train to the gate of the FET 305 and forcibly turns off the FET 305.
- no AC voltage is applied to the primary winding 306a of the transformer 306, and output of AC voltage from the secondary windings 306b, 306c, 306d of the transformer 306 is stopped.
- the rectifier circuit 309a stops supplying the power supply voltage to the gate drive circuits 21a to 21d.
- the gate drive circuits 21a to 21d stop outputting the gate signals G1 to G4 and turn off all the FETs 121_5 to 121_8 of the inverter 121.
- application of AC voltage to the transformer 121_9 is stopped, and voltage output from the rectifier 122 on the secondary side of the transformer 121_9 is stopped.
- charging of the storage battery 13 is stopped.
- the relay that is necessary in the first prior art is unnecessary. Therefore, the problem that has occurred in the first prior art does not occur.
- the gate signals g1 to g4 in the present embodiment are supplied to the inverter 121 via the photocoupler.
- the transmission of the gate signal through the photocoupler is interrupted according to the forced stop signal, the power supply remains connected to the gate drive circuit, so the input becomes unstable and the gate drive circuit oscillates. There is a possibility that each switching element of the inverter is erroneously driven.
- the power supply control IC 304 forcibly opens the primary side circuit of the transformer 306 that is the supply source of the power supply voltage to the gate drive circuits 21a to 21d in response to the forced stop signal.
- the power supply control IC 304 forcibly opens the primary side circuit of the transformer 306 that is the supply source of the power supply voltage to the gate drive circuits 21a to 21d in response to the forced stop signal.
- the power supply control IC 304 and the host ECU 200 that transmits a forced stop signal to the power supply control IC 304 are connected to a common ground line. Therefore, it is not necessary to interpose an element such as a photocoupler for insulation in this path. Therefore, it is not necessary to provide an element for insulation such as a photocoupler in the transmission path of the forced stop signal between the host ECU 200 and the power supply control IC 304. Therefore, the manufacturing cost of the charger 11 can be reduced.
- a relay may be interposed between the input power supply terminal 301 and the auxiliary power supply.
- the charge stop function can be duplicated and charging can be stopped more reliably.
- the charger in the above-described embodiment can be applied not only to a vehicle but also to a charger for mounting on a railway vehicle or an aircraft.
- a forced stop signal may be generated when any of a plurality of types of events occurs.
- reactor 121_9, 306 ... transformer, 120 ... DC / DC converter, 121 ... inverter, 12 ... junction box, 13 ... storage battery, 14 ... B U, 15 ... CAN-BUS, 16 ... charging connector, 17a ... quick charger, 17b ... EVSE, 18 ... charging plug, 21_a, 21_b, 21_c, 21_d ... gate drive circuit, g1, g2, g3, g4, G1, G2, G3, G4 ... gate signal, 3 ... control power supply, 301 ... input power supply terminal, 302 ... transistor, 200 ... host ECU, 304 ... power supply control IC, 307 ... resistor, 309a, 309b, 309c ... rectifier.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Dc-Dc Converters (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Vehicle:電気自動車)等に用いられる車載充電器として、外部の電源から供給される電力に電力変換を施し、その結果得られる直流電圧によりEV内の蓄電池の充電を行う構成のものがある。また、この種の車載充電器の中には、電力変換のための手段としてインバータを含むものがある。
Width Moduration:パルス幅変調)機能を有するICであり、例えばマイクロコンピュータにより構成される。電源制御IC304は、NPNトランジスタ302のコレクタ電圧を所定の閾値と比較することにより、強制停止信号の有無を判定する。そして、強制停止信号が発生していない通常動作時、電源制御IC304は、一定周期のパルス列をFET305のゲートに与えることにより、1次巻線306aを含む1次側回路を周期的に開閉する。これにより交流電圧が2次巻線306b、306c、306dから出力される。2次巻線306bから出力された交流電圧は、整流回路309cによって整流され、直流電圧となって電源制御IC304に供給される。そして、電源制御IC304は、この整流回路309cを介して供給される直流電圧が所定の目標値となるようにFET305に供給するパルス列のパルス幅の制御を行う。
まず、上述した第1の従来技術では、本実施形態における入力電源端子301と補機電源との間にリレーを設ける必要があった。このため、充電器の回路規模が増大する問題がある。また、リレーの分だけ部品数が増加するため、製造コストが増加し、かつ、回路故障の発生率が高くなるという問題があった。
以上、この発明の一実施形態について説明したが、この発明には他にも実施形態が考えられる。例えば次の通りである。
Claims (6)
- インバータにより交流電圧を発生し、この交流電圧を整流することにより蓄電池を充電するための直流電圧を生成する充電器において、
前記インバータを構成する複数のスイッチング素子のオン/オフ切り換えを行うための複数のゲート信号を出力する複数のゲート駆動回路と、
前記複数のゲート駆動回路に電源電圧を供給する制御電源とを具備し、
前記制御電源は、
トランスと、
前記トランスの1次巻線と直流電源とを直列接続してなる1次側回路の開閉を繰り返す電源制御回路と、
前記トランスの2次巻線に発生する交流電圧を整流して前記複数のゲート駆動回路に供給する電源電圧を発生する整流回路とを具備し、
前記電源制御回路は、強制停止信号に応じて前記1次側回路の開閉を停止することを特徴とする充電器。 - 前記1次側回路は、前記1次巻線および前記直流電源と直列接続されたスイッチング素子を含み、
前記電源制御回路は、
前記制御電源のスイッチング素子をオン/オフさせるパルス列を出力することにより前記1次側回路の開閉を行うことを特徴とする請求項1に記載の充電器。 - 前記電源制御回路は、前記強制停止信号に応じて前記1次側回路を開状態とすることを特徴とする請求項1に記載の充電器。
- 前記電源制御回路と共通の接地線に接地されたトランジスタを有し、
前記共通の接地線に接地された前記充電器の上位コントローラが、前記強制停止信号に応じて前記トランジスタのオン/オフ切り換えを行い、
前記電源制御回路は、前記トランジスタの状態を検出することにより前記強制停止信号を検出することを特徴とする請求項1に記載の充電器。 - 前記強制停止信号が前記充電装置の外部から与えられることを特徴とする請求項1に記載の充電器。
- 複数種類の事象のいずれかの発生により前記強制停止信号が発生することを特徴とする請求項1に記載の充電器。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2014/064181 WO2015181919A1 (ja) | 2014-05-28 | 2014-05-28 | 充電器 |
JP2016523033A JP6202203B2 (ja) | 2014-05-28 | 2014-05-28 | 充電器 |
EP14892979.7A EP3151362B1 (en) | 2014-05-28 | 2014-05-28 | Charger |
US15/178,682 US10252626B2 (en) | 2014-05-28 | 2016-06-10 | Charger |
Applications Claiming Priority (1)
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PCT/JP2014/064181 WO2015181919A1 (ja) | 2014-05-28 | 2014-05-28 | 充電器 |
Related Child Applications (1)
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US15/178,682 Continuation US10252626B2 (en) | 2014-05-28 | 2016-06-10 | Charger |
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WO2015181919A1 true WO2015181919A1 (ja) | 2015-12-03 |
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PCT/JP2014/064181 WO2015181919A1 (ja) | 2014-05-28 | 2014-05-28 | 充電器 |
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US (1) | US10252626B2 (ja) |
EP (1) | EP3151362B1 (ja) |
JP (1) | JP6202203B2 (ja) |
WO (1) | WO2015181919A1 (ja) |
Cited By (3)
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CN107791815A (zh) * | 2016-09-07 | 2018-03-13 | 昶洧新能源汽车发展有限公司 | 电动车系统 |
WO2019220544A1 (ja) * | 2018-05-15 | 2019-11-21 | 三菱電機株式会社 | パワーデバイス駆動装置及びその製造方法 |
JP2020129904A (ja) * | 2019-02-08 | 2020-08-27 | 株式会社アイエイアイ | スイッチング電源装置およびそれを利用したモータ駆動制御システム |
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US9834108B2 (en) * | 2016-05-09 | 2017-12-05 | Honda Motor Co., Ltd. | System and method for contacting vehicle via electric vehicle supply equipment |
TWI624132B (zh) * | 2016-12-27 | 2018-05-11 | 飛宏科技股份有限公司 | 用於充電樁之智慧功率分配系統 |
KR102371597B1 (ko) * | 2017-04-06 | 2022-03-07 | 현대자동차주식회사 | 차량의 급속충전 제어 장치 및 방법 |
JP2019075920A (ja) * | 2017-10-18 | 2019-05-16 | シャープ株式会社 | 電力変換装置 |
CN107846060A (zh) * | 2017-11-22 | 2018-03-27 | 深圳市助尔达电子科技有限公司 | 一种电源充电电路 |
CN107947625A (zh) * | 2018-01-10 | 2018-04-20 | 库尔卡人工智能有限公司 | 一种自发电装置 |
CN111527687A (zh) * | 2019-07-08 | 2020-08-11 | 深圳欣锐科技股份有限公司 | 集成车载充电机的开关电源电路及转换器 |
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EP3151362B1 (en) | 2018-09-19 |
US10252626B2 (en) | 2019-04-09 |
EP3151362A1 (en) | 2017-04-05 |
US20160280082A1 (en) | 2016-09-29 |
JPWO2015181919A1 (ja) | 2017-04-20 |
EP3151362A4 (en) | 2017-09-13 |
JP6202203B2 (ja) | 2017-09-27 |
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