WO2010113927A1 - Chargeur de véhicule électrique et procédé de détection de défaut de mise à la terre - Google Patents

Chargeur de véhicule électrique et procédé de détection de défaut de mise à la terre Download PDF

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Publication number
WO2010113927A1
WO2010113927A1 PCT/JP2010/055651 JP2010055651W WO2010113927A1 WO 2010113927 A1 WO2010113927 A1 WO 2010113927A1 JP 2010055651 W JP2010055651 W JP 2010055651W WO 2010113927 A1 WO2010113927 A1 WO 2010113927A1
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Prior art keywords
electric vehicle
ground
electrode side
charging
charger
Prior art date
Application number
PCT/JP2010/055651
Other languages
English (en)
Japanese (ja)
Inventor
博臣 舩越
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東京電力株式会社
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Publication of WO2010113927A1 publication Critical patent/WO2010113927A1/fr

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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
    • 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
    • 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
    • B60L53/11—DC charging controlled by the charging station, e.g. mode 4
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/16—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/30—AC to DC converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility
    • 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
    • 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
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Definitions

  • the present invention relates to ground fault detection of an electric vehicle charger, and in particular, during the rapid charging of an electric vehicle, the ground fault detection device on the electric vehicle charger side and electric
  • the present invention relates to a technology that can quickly detect both occurrences of electric leakage in a vehicle.
  • Patent Literature 1 discloses a leakage detection system that functions as such a capacitor-type insulation monitoring device.
  • a leakage detection system a series circuit consisting of a capacitor, a current transformer, and an AC power source that cuts off direct current is provided between the charging line on one pole side and the vehicle body. An alternating current flowing from the power source through the capacitor and the charging line is detected by the leakage current detector via the current transformer.
  • a charging system described in Patent Document 2 is known as a charging system that controls charging of an on-vehicle battery of an electric vehicle.
  • the control device of the electric vehicle sequentially determines a charging reference value corresponding to the charging status of the in-vehicle battery based on a predetermined charging pattern, and notifies the charger of the charging reference value. To do.
  • a charger controls output electric energy based on the charge reference value received from the electric vehicle.
  • the charging cable of the charger includes a charging line for supplying power to the on-vehicle battery of the electric vehicle, A communication line for communicating with the control device of the electric vehicle is accommodated.
  • the charging line on the charger side and the communication line are respectively connected to the electric vehicle side. Are connected to the power line and communication line.
  • a filtering process by a fast Fourier transform is performed in order to distinguish a minute alternating current and noise that flow when a leakage occurs.
  • fast Fourier transform In order to identify AC current and noise that flows when leakage occurs by fast Fourier transform, it is necessary to sample data over a certain amount of time, and accordingly, it takes time to detect AC current that flows when leakage occurs.
  • a ground fault is monitored on the quick charger side during the rapid charging of the in-vehicle battery of the electric vehicle. It is designed to be blocked. It is desired that the occurrence of electric leakage on the electric vehicle side be detected more quickly during the rapid charging of the on-vehicle battery of the electric vehicle.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to quickly detect both the occurrence of a ground fault in an electric vehicle charger and the occurrence of electric leakage in an electric vehicle during charging of the electric vehicle.
  • An object of the present invention is to provide an electric vehicle charger.
  • a resistor having an equal resistance value is inserted between each charging line on the positive electrode side and the negative electrode side and the ground (ground), and charging is being performed.
  • an existing communication ground wire that connects the negative electrode of the power supply of the controller for the electric vehicle charger to the vehicle body ground is grounded.
  • the negative electrode of the first power source that supplies power to the control device is connected to the vehicle body ground of the electric vehicle by a communication ground wire, and the electric vehicle and the control device are connected to each other.
  • An electric vehicle charger for realizing data communication A positive electrode side and a negative electrode side charging line for supplying power to the in-vehicle battery of the electric vehicle;
  • a series circuit composed of two resistors having the same resistance value, inserted between the positive and negative charging lines;
  • a first grounding wire connecting the grounding position defined between the two resistors to the ground;
  • a second ground wire connecting the communication ground wire to the ground;
  • Detecting means for detecting a current flowing in the first ground line, or a voltage between the ground position and the ground,
  • the controller is Based on the detection value of the detection means, the occurrence of a ground fault in the charging line on either the positive electrode side or the negative electrode side and the occurrence of electric leakage in the electric vehicle are detected.
  • the negative electrode of the first power source that supplies power to the control device is connected to the vehicle body ground of the electric vehicle by a communication ground wire, and the electric vehicle and the control device are connected to each other.
  • An electric vehicle charger for realizing data communication A positive electrode side and a negative electrode side charging line for supplying power to the in-vehicle battery of the electric vehicle;
  • a series circuit composed of two resistors having the same resistance value, inserted between the positive and negative charging lines;
  • a first grounding wire connecting the grounding position defined between the two resistors to the ground;
  • a second ground wire connecting the communication ground wire to the ground;
  • Detection means for detecting a current flowing through the first ground line or a voltage between the ground position and the ground;
  • a controller for detecting a ground fault occurrence in the charging line on either the positive electrode side or the negative electrode side and a leakage occurrence in the electric vehicle based on a detection value of the detection means.
  • Such an electric vehicle charger is provided with a circuit breaker that interrupts at least one of the positive electrode side and the negative electrode side charging line, and the control device detects the occurrence of the ground fault or the electric leakage, the positive electrode side
  • the circuit breaker may be instructed to interrupt at least one of the negative-side charging line.
  • the electric vehicle charger is provided with a second power source insulated from the ground, and the control device is supplied with power from the first power source to perform data communication with the electric vehicle.
  • the electric vehicle charger can more quickly detect both the occurrence of ground fault in the electric vehicle charger and the occurrence of electric leakage in the electric vehicle.
  • FIG. 1 is a diagram for explaining a schematic configuration of a charger for an electric vehicle according to an embodiment of the present invention.
  • FIG. 2A is a diagram showing a flow of a ground fault current when a ground fault occurs in the negative electrode side charging line of the electric vehicle charger in FIG. 1
  • FIG. 2 is a diagram showing a flow of a ground fault current when a ground fault occurs in the positive electrode side charging line of the electric vehicle charger.
  • FIG. 3A is a diagram illustrating a flow of a leakage current when a leakage occurs in the negative electrode side charging line of the electric vehicle during the rapid charging by the electric vehicle charger in FIG.
  • FIG. 4 is a diagram for explaining a schematic configuration of a charger for an electric vehicle with a countermeasure against surge according to another embodiment of the present invention.
  • the configuration of the electric vehicle charger according to the present embodiment will be described.
  • an explanation will be given by taking as an example a quick charger that is installed in a charging stand or the like and rapidly charges an on-vehicle battery of an electric vehicle.
  • FIG. 1 is a diagram showing a schematic configuration of an electric vehicle charger 100 according to the present embodiment.
  • FIG. 1 shows an example in which the contact connector 101 of the electric vehicle charger 100 is attached to the contact connector 201 on the electric vehicle 200 side.
  • the electric vehicle charger 100 includes a control device 104, a control system power supply 108, an electric leakage breaker (ELB) 105, an AC / DC converter 103, a charging cable 106, a contact connector 101,
  • ELB electric leakage breaker
  • the control device 104 controls the entire electric vehicle charger 100.
  • the control system power supply 108 supplies 12V power to the control device 104.
  • the earth leakage breaker (ELB) 105 is connected to a lead-in cable for an AC power supply (for example, 200 V) 300, and the AC / DC converter 103 converts the AC current supplied from the AC power supply 300 via the earth leakage breaker 105 to the DC current I. Convert to 1 .
  • the configuration of the earth leakage circuit breaker 105 that disconnects both the positive electrode side and negative electrode side outputs (positive electrode side and negative electrode side charging lines 103A and 103B) of the AC power source 300 from the AC power source 300 is illustrated.
  • the device 105 may be configured to disconnect one of the positive electrode side and negative electrode side charging lines 103 ⁇ / b> A and 103 ⁇ / b> B from the AC power supply 300.
  • the charging cable 106 accommodates the positive and negative charging lines 103 ⁇ / b> A and 103 ⁇ / b> B from the AC / DC converter 103.
  • the contact connector 101 is provided at the tip of the charging cable 106.
  • the charging cable 106 further accommodates the communication line 107 from the control apparatus 104 and the communication ground line 110.
  • the communication ground wire 110 is for connecting the negative electrode of the control system power supply 108 to the vehicle body ground 203.
  • the vehicle body ground 203 is connected to a negative electrode of a control system power source 208 that supplies a 12V power source to the control device 204 of the electric vehicle 200.
  • the positive and negative charging lines 103A and 103B of the electric vehicle charger 100 are Not only the positive and negative charge lines 206A and 206B on the electric vehicle 200 side, but also the terminal of the communication line 107 and the terminal of the communication line 207 on the electric vehicle 200, and the charger for the electric vehicle. 100 terminals of the communication ground line 110 and terminals of the communication ground line 205 on the electric vehicle 200 side are respectively connected.
  • the electric vehicle charger 100 also monitors for a ground fault in the positive and negative charging lines 103A and 103B during the rapid charging of the in-vehicle battery 202 of the electric vehicle 200, as well as leakage in the electric vehicle 200. It has the structure for doing. Specifically, the grounding wire 109 that connects the communication grounding wire 110 to the ground (ground) 400 on the electric vehicle charger 100 side, the occurrence of ground faults in the positive and negative charging lines 103A and 103B, and the electric vehicle And a ground fault detection device 102 that detects both occurrences of electric leakage in 200.
  • the ground fault detection device 102 includes a series circuit 1021 composed of two resistors 1021A and 1021B having the same resistance value inserted between the positive-side charging line 103A and the negative-side charging line 103B, and between the resistors 1021A and 1021B.
  • a suitable position for example, a position where resistance is equally divided into two, hereinafter referred to as a ground connection point
  • 1021C to the ground (ground) 400
  • Current detector 1022 such as a current transformer (DC CT) that sequentially outputs and a controller 1024 to which a measured value of the current detector 1022 is input.
  • DC CT current transformer
  • resistors 1021A and 1021B having the same resistance value are inserted between the positive side charging line 103A and the ground 400 and between the negative side charging line 103B and the ground 400, respectively, to the in-vehicle battery 202 of the electric vehicle 200.
  • the current detector 1022 causes the ground fault current (the DC current between the positive charging line 103A and the ground 400, the DC current between the negative charging line 103B and the ground 400, via the resistors 1021A and 1021B.
  • DC current is measured sequentially, and the controller 1024 monitors the variation of the measured value. Going on.
  • the two resistors 1021A and 1021B that suppress the abnormal current that flows when a ground fault occurs.
  • the resistance values of the resistors 1021A and 1021B become too large, the current detection time becomes long. Therefore, when determining the resistance values of the resistors 1021A and 1021B, it is necessary to consider the performance of the current detector 1022 to be used. . For these reasons, for example, in the case of an AC power supply of 200 V, it is preferable to determine the resistance values of the resistors 1021A and 1021B within a range of several tens of k ⁇ to several hundreds of k ⁇ .
  • FIG. 2A is a diagram illustrating a flow of a ground fault current when a ground fault occurs in the negative electrode side charging line 103B of the electric vehicle charger 100
  • FIG. It is a figure which shows the flow of a ground fault electric current when a ground fault generate
  • FIG. 2A only the configuration of the closed circuit portion through which the ground fault current flows is shown, and the other configurations are omitted.
  • the terminals of the positive and negative charging lines 103A and 103B of the electric vehicle charger 100 are connected to the electric vehicle.
  • the DC current I 1 is supplied from the electric vehicle charger 100 to the in-vehicle battery 202 of the electric vehicle 200 by connecting to the terminals of the positive electrode side and negative electrode side charging lines 206A and 206B of the electric vehicle 200 (see FIG. 1), the electric vehicle Rapid charging of 200 in-vehicle batteries 202 starts.
  • the ground connection point 1021C and the ground 400 have the same potential (0 V), and no direct current flows through the ground line 1023. .
  • ground fault current I 2 flowing into the land ⁇ P1 line 103B flows into the ground 400 via the AC-DC converter 103, the positive electrode side charging line 103A, one of the resistors 1021A and the ground line 1023. Therefore, the current detector 1022 detects the ground fault current I 2.
  • ground fault current I 3 flowing into the earth 400 from ⁇ P2 is a ground line 1023 flows to the AC-DC converter 103 via the other resistor 1021B and the negative electrode side charging line 103B. Therefore, the current detector 1022 detects the ground fault current I 3.
  • FIG. 3A is a diagram illustrating a flow of a leakage current when a leakage occurs in the negative electrode side charging line 206 ⁇ / b> B of the electric vehicle 200
  • FIG. 3B is a positive electrode side charging line of the electric vehicle 200. It is a figure which shows the flow of the earth leakage current when the earth leakage occurs in 206A. In these figures, only the configuration of the closed circuit portion through which the leakage current flows is shown, and the other configurations are omitted.
  • the ground fault detection device 102 As described above, while the rapid charging of the in-vehicle battery 202 of the electric vehicle 200 is normally performed, in the ground fault detection device 102, the voltages applied to the two resistors 1021A and 1021B having the same resistance value are balanced. Therefore, no direct current flows through the ground line 1023.
  • the power supply ground of the control device 104 is originally not shared with the ground 400, but in this embodiment, the negative side of the control system power supply 108 that supplies power to the control device 104 is grounded to the ground 400. Since the grounding wire 109 to be provided is shared and the power supply ground of the control device 104 and the earth 400 to which the ground fault detection device 102 is connected are shared, the earth leakage current I 4 generated on the electric vehicle 200 side becomes a ground fault. A route is formed through the ground line 1023 of the detection device 102, the ground line 109 of the control system power supply 108, and the communication ground lines 110 and 205. Therefore, the current detector 1022 of the ground fault sensing device 102 detects the leakage current I 4.
  • the ground wire 109 is provided as described above, and the power ground of the control device 104 and the ground are grounded.
  • the leakage current I 5 generated on the electric vehicle 200 side causes the communication ground lines 110 and 205, the ground line 109 of the control system power supply 108, and the ground fault.
  • a route passing through the ground line 1023 of the detection device 102 is formed. Therefore, the current detector 1022 of the ground fault sensing device 102 detects the earth leakage current I 5.
  • the controller 1024 monitors the measurement values sequentially input from the current detector 1022 during the rapid charging of the in-vehicle battery 202 of the electric vehicle 200, and If the measured value exceeds a predetermined threshold value, it is determined that a ground fault on the electric vehicle charger 100 side or an electric leakage on the electric vehicle 200 side has occurred, and an abnormal signal indicating the occurrence of a ground fault or the like is transmitted to the control device 104. Send to. In response to this, the control device 104 interrupts the circuit under the control of the leakage breaker 105.
  • control device 104 transmits a message notifying the occurrence of a ground fault on the electric vehicle charger 100 side or an electric leakage on the electric vehicle 200 side to the control device 204 of the electric vehicle 200 via the communication lines 107 and 207. To do.
  • the control device 104 may output a report to the administrator or the like from the output device.
  • the current detection of the ground fault detection device 102 is performed. Since the device 1022 detects a current of about 0.1 to several mA, it is possible to immediately detect the occurrence of a ground fault by directly comparing this measured value with a threshold value.
  • an existing communication ground wire 110 for common reference potential between the control device 204 of the electric vehicle 200 and the control device 104 of the electric vehicle charger 100 is grounded by the ground wire 109 on the electric vehicle charger 100 side.
  • the ground fault detection apparatus 102 does not include an element that interferes with the noise removing capacitor of the electric vehicle charger 100, Occurrence of erroneous ground fault detection due to interference can be prevented.
  • the ground fault of electric vehicle charger 100 and the electric leakage of electric vehicle 200 during rapid charging of electric vehicle 200 can be detected more quickly, and the reliability of the detection can be improved. Can do.
  • the DC current between the ground connection point 1021C and the ground 400 is detected by the current detector 1022, but the voltage between the ground connection point 1021C and the ground 400 may be detected by a voltage detector.
  • the ground line 1023 needs to have at least a resistance sufficient to detect a voltage between the ground connection point 1021C and the ground 400.
  • the controller 1024 that determines the occurrence of a ground fault based on the measurement value of the current detector 1022 is provided in the ground fault detection device 102.
  • the control device 104 measures the current detector 1022.
  • the input of a value may be sequentially received, and the occurrence of a ground fault may be determined by comparing the measured value with a threshold value (the same applies below).
  • the communication ground line 110 for common reference potential between the control device 204 of the electric vehicle 200 and the control device 104 of the electric vehicle charger 100 is connected to the ground 400 of the electric vehicle charger 100. Is grounded. For this reason, it may be necessary to consider the influence of a surge or the like on the control device 104 of the electric vehicle charger 100.
  • the configuration of the charger for an electric vehicle provided with a countermeasure against surge will be described focusing on the difference from the charger 100 for the electric vehicle described above.
  • FIG. 4 is a diagram for explaining a schematic configuration of an electric vehicle charger 100A that has been subjected to surge countermeasures.
  • the same reference numerals as those in FIG. 1 are assigned to the same configurations as those of the electric vehicle charger 100 described above.
  • the control device 104A of the electric vehicle charger 100A includes a control system circuit unit 1042 that executes control processing of the entire electric vehicle charger 100A and a communication system that executes data communication processing with the electric vehicle 200.
  • the circuit unit 1041 includes a photocoupler 1043 that connects the data transfer line of the control system circuit unit 1042 and the data transfer line of the communication system circuit unit 1041. That is, in the control device 104A, the control system circuit unit 1042 and the communication system circuit unit 1041 realize mutual data communication in a non-contact (electrically separated) state.
  • the electric vehicle charger 100 ⁇ / b> A further includes another control system power supply 108 ⁇ / b> A floating from the ground 400 independently of the control system power supply 108 in which the negative electrode is connected to both the ground line 109 and the communication ground line 110. ing.
  • the control system power supply 108 supplies 12 V power to the communication system circuit unit 1041, and the control system power supply 108 A supplies 12 V power to the control system circuit unit 1042.
  • Other configurations are the same as those of the electric vehicle charger 100 described above.
  • the control system circuit unit 1042 can be floated from the ground 400 while enabling data communication between the control system circuit unit 1042 and the control device 204 of the electric vehicle 200.
  • the ground fault detection device 102 not only detects the occurrence of a ground fault in the electric vehicle charger 100A during the rapid charging, but also in the electric vehicle 200 during the rapid charging.
  • the occurrence of electric leakage can also be detected using the communication ground wires 110 and 205 and the ground wire 109.
  • the influence of a surge or the like on the control device 104 of the electric vehicle charger 100 can be prevented.
  • the data transfer line of the control system circuit unit 1042 and the data transfer line of the communication system circuit unit 1041 are connected by the photocoupler 1043, but between the control system circuit unit 1042 and the communication system circuit unit 1041. What is necessary is just to be able to realize the data transfer in a non-contact manner and connect the two.
  • the data transfer line of the control system circuit unit 1042 and the data transfer line of the communication system circuit unit 1041 may be connected by a non-contact type relay.
  • the present invention can be widely applied not only to an electric vehicle but also to an electric vehicle having a charging function from an external power source of a mounted battery.
  • SYMBOLS 100,100A Charger for electric vehicles, 101: Contact type connector, 102: Ground fault detection device, 103: AC / DC converter, 103A: Positive side charging line, 103B: Negative side charging line, 104, 04A: Control Device: 105: Earth leakage breaker (ELB), 106: Charging cable, 107: Communication line, 108: Control system power supply, 108A: Control system power supply, 109: Ground line, 110: Communication ground line, 200: Electric vehicle, 201: contact type connector, 202: vehicle-mounted battery, 203: vehicle body ground, 204: control device, 205: communication ground wire, 206A: positive side charging line, 206B: negative side charging line, 207: communication line, 208 : Control system power supply, 300: AC power supply, 400: ground, 1021A, 1021B: resistance, 1021: series circuit of resistance, 1022: electricity Detector, 1023: ground line, 1024: controller, 1041: communication circuits unit, 10

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

La présente invention se rapporte à un chargeur de véhicule électrique qui est apte, tandis qu'il exécute une charge rapide sur un véhicule électrique, de détecter rapidement à la fois la survenue d'un défaut de mise à la terre dans un chargeur de véhicule électrique et la survenue de fuites dans le véhicule électrique. Afin de permettre une communication de données avec un véhicule électrique (200) durant la mise en charge, un fil de communication avec mise à la terre (110) qui sert à relier l'électrode négative du bloc de fourniture de puissance d'un système de commande (208) du chargeur de véhicule électrique à un point de branchement à la terre prévu sur la carrosserie d'un véhicule (203) est mis à la terre (400) par le biais d'un fil de mise à la terre (109). Un dispositif de détection de défaut de mise à la terre (102) du chargeur de véhicule électrique (100) comprend un circuit en série (1021) de résistances (1021A, 1021B) qui ont des valeurs de résistance identiques, le circuit étant connecté à des lignes de charge du côté de l'électrode positive et du côté de l'électrode négative (103A, 103B). Le dispositif de détection de défaut de mise à la terre selon l'invention comprend également : un fil de mise à la terre (1023) qui sert à relier un point entre les résistances (1021A, 400B) à la terre (1022) ; un détecteur de courant (1023) qui sert à délivrer séquentiellement en sortie les valeurs mesurées du courant CC qui circule au travers du fil de mise à la masse (1023) ; et un contrôleur (1024) qui sert à détecter la survenue d'un défaut de mise à la terre dans le chargeur de véhicule électrique (100) et la survenue de fuites dans le véhicule électrique, en comparant les valeurs mesurées de courant délivrées en sortie par le détecteur de courant (1022) à une valeur de seuil.
PCT/JP2010/055651 2009-03-31 2010-03-30 Chargeur de véhicule électrique et procédé de détection de défaut de mise à la terre WO2010113927A1 (fr)

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JP2009087002A JP5369833B2 (ja) 2009-03-31 2009-03-31 電動車両用充電器および地絡検出方法

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TWI689733B (zh) * 2017-11-26 2020-04-01 台達電子工業股份有限公司 車載充電裝置及其操作方法
CN113771630A (zh) * 2021-09-24 2021-12-10 中车长春轨道客车股份有限公司 城铁车辆接地保护电路

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JP5945804B2 (ja) * 2012-03-29 2016-07-05 パナソニックＩｐマネジメント株式会社 リレー溶着診断装置
JP6111500B2 (ja) 2013-03-29 2017-04-12 パナソニックＩｐマネジメント株式会社 電気接続用コネクタ
JP2015047042A (ja) * 2013-08-29 2015-03-12 株式会社デンソー 電力供給装置
WO2018008074A1 (fr) * 2016-07-04 2018-01-11 三菱電機株式会社 Dispositif d'alimentation en énergie de bâtiment de gare et procédé de détection de charge
CN109130949B (zh) * 2016-12-17 2022-03-08 周仁超 一种电动汽车充电系统
JP6724811B2 (ja) * 2017-02-07 2020-07-15 トヨタ自動車株式会社 充電システム
JP7070333B2 (ja) 2018-10-29 2022-05-18 トヨタ自動車株式会社 電力変換ユニット

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