CN103178592A - Charging device for electric vehicle and charging system for electric vehicle - Google Patents
Charging device for electric vehicle and charging system for electric vehicle Download PDFInfo
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- CN103178592A CN103178592A CN2012105625522A CN201210562552A CN103178592A CN 103178592 A CN103178592 A CN 103178592A CN 2012105625522 A CN2012105625522 A CN 2012105625522A CN 201210562552 A CN201210562552 A CN 201210562552A CN 103178592 A CN103178592 A CN 103178592A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/91—Electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/30—Sensors
- B60Y2400/308—Electric sensors
- B60Y2400/3084—Electric currents sensors
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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
- H02J7/04—Regulation of charging current or voltage
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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
- 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
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a charging device for an electric vehicle and a charging system for an electric vehicle. When the charging of the electric vehicle (200) is started again after being interrupted, a control unit (communication control unit 14) enables a transmission unit (signal processing unit 10) to transmit signals after the voltage between transmission lines (151) is below a regulated voltage. Namely, when the voltage between transmission lines (151) is below the regulated voltage, the ECU for charging of an electric automobile (200) is identified that a charging connector is dismounted from an insert port. Therefore, if the oscillation of pilot signals is started again by applying the voltage between lines to the transmission lines (151) via the signal processing unit (10), the ECU for charging can be identified that the charging connector (16) is inserted and connected to the insert port again to start the charging via common flow. The charging device provided normally starts the charging again after the charging is interrupted.
Description
Technical field
The present invention relates to a kind of electric vehicles charging device and electric vehicles charging system for the motor vehicles such as electric automobile are charged.
Background technology
As conventional example, for example there is a kind of charging device of putting down in writing in Japanese Patent Publication 2003-333706 communique.This charging device is used for the battery type fork truck is charged, and comes to power from device power supply (DPS) by power line is connected to via circuit breaker the supply socket that is connected with device power supply (DPS) in factory.In addition, be equipped with communication function in charging device, with between other charging device that device power supply (DPS) connects via the order wire sending and receiving information relevant with charged state.
In this conventional example, the current value (total current limits value) that one or more charging device integral body that will be connected with device power supply (DPS) can be used is set as the value of regulation.And each charging device automatically is set in the electric current that uses in charging device after having confirmed the charge condition of other charging device based on above-mentioned value (total current limits value).Therefore, do not consider charging device is carried out the power supply capacity of the device power supply (DPS) of power supply supply, and suitably set motor vehicle (battery type fork truck) electric power that when charging, charging device consumes.Therefore, user's power supply capacity of not setting up device power supply (DPS) just can charge to motor vehicle well.
In addition, in the situation that in dwelling house, motor vehicle (electric automobile) is charged, the charging current that preferably limits electric automobile surpasses the rated value of backbone circuit breaker (or limiter) with the total amount of the electric power (electric current) avoiding dwelling house and consume.For example, monitor the electric current flow through the backbone circuit breaker, in the situation that this electric current surpass the backbone circuit breaker rated current 90%, charging device stops can preventing thus the tripping operation of backbone circuit breaker to the electric automobile supplying charging current.At this moment, need to notify when charging device stops charging and to charge to motor vehicle.
About the charging to motor vehicle as described above, for example regulation has following content in american car technological associations (SAE) standard: the pulse-width signal of transmission 1kHz from charging device to electric automobile (be called and control pilot signal), the connection duty of use pulse signal is recently notified the higher limit of charging current.And, in the SAE standard, about the pilot signal that charging device sends out, will connect duty ratio and be defined as and can not charge greater than 96% the time.Therefore, charging device for example is set as 100% (being maintained all the time on-state) by the connection duty ratio with pulse-width signal, can not charge to the electric automobile notice.Yet, when again beginning the charging to electric automobile after charging device interrupts the charging of electric automobile, in the time connecting duty ratio and change to less than 96% value from 100%, might cause being judged as in electric automobile side mistake and produce that abnormal (for example the car type according to electric automobile is different, in the time only connecting duty ratio be made as 100% within the very short time, might be judged as by mistake produced abnormal).
Summary of the invention
The present invention completes in view of the above problems, and its purpose is can normally again begin charging after interrupting charging.
Electric vehicles charging device of the present invention is connected with motor vehicle via charge cable, and via the transmission line signal transmission that is included in above-mentioned charge cable, thus above-mentioned motor vehicle is notified at least the higher limit of charging current, this electric vehicles charging device is characterised in that: above-mentioned electric vehicles charging device possesses: transmission unit, and it is used for transmission and the voltage between lines of above-mentioned transmission line is carried out the signal transmission of pulse-width modulation gained; And control unit, it makes above-mentioned transmission unit utilize the said transmission signal transmission to comprise the various information of above-mentioned higher limit, wherein, in the situation that interrupt again beginning to charge after the charging of above-mentioned motor vehicle, above-mentioned control unit makes above-mentioned transmission unit transmission said transmission signal after making above-mentioned voltage between lines become below assigned voltage.
In this electric vehicles charging device, preferably from the state variation that can not charge to the state that can charge the time, above-mentioned control unit makes above-mentioned transmission unit transmission said transmission signal after making above-mentioned voltage between lines become below afore mentioned rules voltage.
Electric vehicles charging system of the present invention is characterised in that to possess: above-mentioned electric vehicles charging device; And electric power monitoring device, it is to the above-mentioned higher limit of above-mentioned control unit indication, wherein, in the situation that from the above-mentioned higher limit of the above-mentioned electric power monitoring device indication threshold value less than regulation, above-mentioned control unit is judged as and can not charges, in the situation that be more than above-mentioned threshold value from the above-mentioned higher limit of above-mentioned electric power monitoring device indication, above-mentioned control unit is judged as and can charges.
In this electric vehicles charging system, preferably above-mentioned electric power monitoring device possesses: the second current sensor, and it is used for measuring the above-mentioned charging current of supplying with to above-mentioned motor vehicle from distribution board; And first current sensor, it is used for measuring all current sinkings of supplying with to above-mentioned distribution board from electric power system, wherein, the above-mentioned charging current that above-mentioned all current sinkings that above-mentioned electric power monitoring device goes out according to above-mentioned the first current sensor measurement, above-mentioned the second current sensor determine and the rated current of above-mentioned distribution board are come the above-mentioned higher limit of above-mentioned control unit indication.
Electric vehicles charging device of the present invention and electric vehicles charging system have can normally begin the effect of charging again after interrupting charging.
Description of drawings
Fig. 1 is the system construction drawing of the related electric vehicles charging system of the block diagram of the related electric vehicles charging device of embodiments of the present invention and embodiments of the present invention.
Fig. 2 is the sequential chart for the action of the related charging device of explanation execution mode.
Fig. 3 is the sequential chart for the elemental motion of the related charging device of explanation execution mode.
Embodiment
Below, with reference to accompanying drawing, describe in detail technological thought of the present invention is applied to be arranged in the dwelling house of only, is used for utilizing electric vehicles charging device (being designated hereinafter simply as charging device) that the electric power supplied with from electric power system charges to electric automobile and the execution mode of system thereof.But motor vehicle is not limited to electric automobile, such as being also the illustrated battery type fork truck of prior art etc.
As shown in Figure 1, from electric power system 100 via electric distribution board for apartment (distribution board is designated hereinafter simply as the dwelling house dish) 4 alternating electromotive forces to Residence supply single-phase three-wire formula.Dwelling house dish 4 has backbone circuit breaker 40 and a plurality of branch circuit breaker 41.The primary side of backbone circuit breaker 40 (input side) is connected with electric power system 100.A plurality of branch circuit breaker 41 branches are connected in the secondary side (outlet side) of backbone circuit breaker 40.That is to say, the primary side of each branch circuit breaker 41 (input side) is connected with the secondary side (outlet side) of backbone circuit breaker 40.But, also have the situation of inserting limiter (flow restricter) at the primary side of backbone circuit breaker 40.In addition, although omitted diagram, the secondary side of each branch circuit breaker 41 (outlet side) is connected with socket, load (ligthing paraphernalia, electromagnetic kitchen range, air regulator etc.) via distribution within doors.
The electric vehicles charging system of present embodiment has charging device 1 and electric power monitoring device 2 as shown in Figure 1.
Electric power monitoring device 2 possesses control part 20, current measurement section 21, Department of Communication Force 22 etc.In addition, electric power monitoring device 2 possesses for current sensor (the first current sensor) 210,211 from electric power system 100 to the dwelling house dish that measure 4 electric currents of supplying with from.Current measurement section 21 uses respectively current sensor 210,211 to measure the electric current of two electric wires (two pressure-wire) beyond the neutral line that flows through in three electric wires (lamp cord) that are connected with the primary side of backbone circuit breaker 40, and exports each measured value to control part 20.Control part 20 is take microcomputer as the main composition key element, the measured value (magnitude of voltage) of the current value measured according to current measurement section 21, the primary side voltage (input voltage) of backbone circuit breaker 40 comes the instantaneous value, aggregate-value of the electric power (supply capability) that computing supplies with from electric power system 100 etc.In addition, communicate between Department of Communication Force 22 and charging device 1, for example carry out the serial communication take the RS485 standard as benchmark.But the communication mode of Department of Communication Force 22 is not limited to the RS485 standard, can be also power line carrier communication, radio communication (such as low-power wireless communication etc.) etc.
Opening/closing portion 13 has the electromagnetic relay (not shown) that is inserted into the supply path 150 from branch circuit breaker 41 to supply lines, by with from the indication of signal processing part 10 correspondingly with electromagnetic relay closed/disconnect, open and close above-mentioned supply path.The unsymmetrical current that flows through supply path detects by zero phase current transformer 11 in detection of electrical leakage section 12, in the situation that the detection level of this unsymmetrical current over threshold value, is judged as, electric leakage has occured, and controls opening/closing portion 13 supply path is disconnected.Communication control unit 14 has communication function and adjusts function, this communication function be and the Department of Communication Force 22 of electric power monitoring device 2 between communicate the function of (serial communication of RS485 standard), this adjustment function is to adjust as described later the function of the charging current that electric automobile 200 is supplied with.The integrated circuit that such communication control unit 14 is used by microcomputer and serial communication etc. consists of.In addition, electric power monitoring device 2 possesses for current sensor (the second current sensor) 212 from dwelling house dish 4 to electric automobile that measure 200 charging currents of supplying with from.And, in electric power monitoring device 2, measure the electric current (charging current) of supplying with via 1 pair of electric automobile of charging device 200 by current sensor 212.
At this, the basic charging action of charging device 1 is described with reference to the sequential chart of Fig. 3.At first, when when t ' 0 constantly is connected to the insert port of electric automobile 200 with charge connector 16, apply the voltage V1 (for example V1=12 volt) of regulation from 10 pairs of transmission lines 151 of signal processing part.And, the voltage (voltage between lines) that is applied to transmission line 151 becomes the transmission medium of controlling pilot tone (CPLT) signal (being designated hereinafter simply as pilot signal), with its voltage level with connect duty ratio correspondingly, the various information of giving and accepting as described later between charging is with ECU and signal processing part 10.
When the pilot signal of voltage V1 being detected, the switch that is inserted between transmission line 151 and ground connection by closure comes contact resistance with ECU in charging, makes thus the voltage level of pilot signal be depressured to V2 (for example V2=9 volt) (t ' 1 moment) from V1.Signal processing part 10 is when detecting pilot signal and be reduced to V2 from V1, and output has the pilot signal (t ' 2 constantly ~) of the pulse type of assigned frequency (for example 1kHz).The signal level of this pilot signal is ± V1, but boundary level is pumped down to V2.
The connection duty ratio of pilot signal represents the higher limit of charging current.Each charging device 1 is preset the higher limit of the charging current corresponding with connecting duty ratio.For example in the SAE standard, the pilot signal that sends out about charging device 1, be defined as and connecting duty ratio more than 10% and in the scope below 85%, multiply by the numerical value (ampere) of 0.6 gained as higher limit (for example when the connection duty ratio was 10%, higher limit was 6 amperes) with connecting duty ratio.In addition, be defined as in the situation that connect duty ratio greater than 85% and below 96%, with connect duty ratio deduct multiply by 2.5 gained after 64 numerical value (ampere) as higher limit.That is, pilot signal is transmitted the information (value) of higher limit with the be added to voltage between lines of transmission line 151 of pulse-width signal.In addition, the pilot signal that sends out about charging device 1 in the SAE standard, is defined as and represents error condition or do not allow charging greater than 96% situation connecting duty ratio less than 10% (except 5%) and connect duty ratio.In addition, being defined as connecting duty ratio is that 5% situation represents to carry out digital communication (with reference to SAE J1772).
When charging identifies the higher limit of charging current with ECU when the connection duty ratio that detects pilot signal, the voltage level (for example passing through contact resistance) of pilot signal is depressured to V3 (for example 6 volts) (t ' 3 constantly) from V2.When signal processing part 10 was reduced to V3 when the signal level that detects pilot signal from V2, closed opening/closing portion 13 began to supply with charging power.
Charging uses ECU according to the higher limit of the charging current of notifying from charging device 1, set to be used for the current value (higher limit of≤charging current) till charging level with storage battery is charged to target level, and to the charger that is equipped on electric automobile 200 (not shown) output charging instruction.The charger that receives charging instruction on one side so that the mode that charging current is no more than the current value that charging sets with ECU charging current is adjusted on one side storage battery charge (t ' 3 constantly ~).When the charging level of storage battery reached target level, charging finished charging to storage battery with ECU to charger output charging END instruction, and makes the voltage level of pilot signal return to V2 (t ' 4 moment) from V3.Charger finishes the charging to storage battery when receiving the charging END instruction.
Signal processing part 10 disconnects opening/closing portion 13 and stops supplying with alternating electromotive force when detecting pilot signal and be changed to V2 from V3.In addition, charging comes off resistance with ECU by disconnecting the switch be connected with transmission line 151, makes thus the voltage level of pilot signal return to originally V1 (t ' 5 moment).When signal processing part 10 returns to V1 when the voltage level of pilot signal, stop the vibration of assigned frequency, the voltage level of pilot signal is maintained V1, return to holding state (t ' 6 constantly).
The supply to the charging power of electric automobile 200 is connected and cut off to charging device 1 as described above, and to the charging of electric automobile 200 higher limit with ECU indication charging current, control thus the charging to the storage battery that is equipped on electric automobile 200.
Yet 200 chargings need the large charging current of tens amperes ~ tens amperes of left and right usually to electric automobile.On the other hand, in common dwelling house, the rated current of backbone circuit breaker 40 (being limiter and backbone circuit breaker 40 in the situation that be provided with limiter) is set to 30 amperes ~ 60 amperes left and right.Thereby, in the situation that electric automobile 200 is charged when using the large load equipment of the such current sinking of electromagnetic kitchen range, air regulator, if flow through the charging current that reaches predefined higher limit in charging device 1, might cause backbone circuit breaker 40, limiter tripping operation.
Therefore, the control part 20 of electric power monitoring device 2 (for example one second interval) termly makes Department of Communication Force 22 send instructions (adjustment instruction), and this instruction is to deduct the instruction of current value of the difference gained of all current sinkings and rated current for the current value that the higher limit with charging current is made as current charging current.That is, the current value that electric power monitoring device 2 calculates charging currents deducts the value of difference gained of the rated current of all current sinkings and dwelling house dish 4, and this value is notified to communication control unit 14.In addition, all current sinkings are summations of the current sinking (load consumed current) of charging current and load equipment.For example measure all current sinkings with the current sensor 210,211 that is arranged between electric power system 100 and backbone circuit breaker 40.
Change a kind of saying, the control part 20 of electric power monitoring device 2 makes Department of Communication Force 22 send termly instruction (adjustment instruction), and this instruction is to be made as the instruction of the difference of rated current and load consumed current for the higher limit with charging current.
In charging device 1, the communication control unit 14 index signal handling parts 10 that receive the adjustment instruction that sends from electric power monitoring device 2 are made as the higher limit of charging current and adjust below the indicated higher limit of instruction.And signal processing part 10 changes the connection duty ratio of pilot signal according to the adjustment instruction from communication control unit 14 indications when the indication that receives from communication control unit 14.For example, in the situation that the current capacity of charge cable 15 (can flow through the tolerance of the electric current of charge cable 15) is 30 amperes, be that 50% connection duty ratio for example reduces to 40% ~ 20% originally, result is that the higher limit of charging current is adjusted to the 30 amperes of low values (for example 15 amperes) than originally.But, if the higher limit of last time is identical with this higher limit, do not change the connection duty ratio.In addition, communication control unit 14 also can use from Department of Communication Force 22 by adjusting the value repeatedly of the indicated value of instruction.For example, communication control unit 14 mean value that also can be based on value repeatedly comes to the structure of the higher limit of signal processing part 10 indication charging currents etc.
The current value of charging current is set in the charging of electric automobile 200 again according to the higher limit after adjusting with ECU, and to charger output charging instruction.The charger that receives charging instruction is on one side adjusted charging current in the mode that is no more than the new current value that charging sets with ECU and on one side storage battery is charged.The charging current of consequently electric automobile 200 being supplied with is below the higher limit of signal processing part 10 settings, therefore, can avoid all current sinkings to surpass the rated current of backbone circuit breaker 40.
Yet, reduce charging current in order to make charging device 1, from being sent, electric automobile 200 is indicated to till the electric automobile 200 actual minimizing of side charging currents, produce quite long time of delay.For example, adjust instruction and need time T 2 till the connection duty ratio of change pilot signal, need time T 3 till electric automobile 200 and pilot signal correspondingly reduce charging current if suppose to receive from communication control unit 14, generation time T1 (=T2+T3) delay.Consequently continue at least time of delay T1 and flow through the overload electric current in backbone circuit breaker 40, therefore, during operate time, might cause 40 tripping operations of backbone circuit breaker when tripping operation that T1 surpasses backbone circuit breaker 40 time of delay.And, in most cases different according to the car type of electric automobile 200, time T 2 differences that need till the connection duty ratio that changes pilot signal.
Therefore, in the situation that reduce higher limit backbone circuit breaker 40 tripping operation of charging current, preferably making charging temporarily interrupt charging with ECU in order to prevent, the higher limit with charging current when again beginning to charge is adjusted into than low value before interrupting.At this, as explanation in the prior art, when stopping charging, charging device 1 need to stop electric automobile 200 notice chargings.As explanation in the prior art, the method as stopping from charging device 1 notice charging exists the connection duty ratio with pilot signal to be made as 100% method.Yet, in the situation that transformation period in having stipulated the state variation of pilot signal etc., when the connection duty ratio of pilot signal being made as the value that again is set as after 100% less than 100% (for example 80%) in charging process, different according to the car type of electric automobile 200, might produce do not expect abnormal.
In addition, as other problem points, in the situation that the value of charging current is little, because there is internal resistance etc., therefore can't supply with from distribution board to charger sufficient electric power.Thereby, for example in the SAE standard not regulation charging current is made as less than 6 amperes.Therefore, for example in the situation that charging device 1 is followed the SAE standard, when due to the use of load equipment etc. and the feasible value of charging current is reduced to less than 6 ampere-hours, charging device 1 (for example the connection duty ratio with pilot signal is made as 100%) interrupts charging.In this case, different according to the car type of electric automobile 200 when in charging process, the connection duty ratio of pilot signal being made as when again being set as less than 100% value after 100%, might produce do not expect abnormal.
Therefore, in the present embodiment, in the situation that interrupted again beginning after charging to electric automobile 200, be made as below assigned voltage (stand-by time that continues regulation) at communication control unit 14 control signal handling part 10 voltages between lines with transmission line 151 after, make signal processing part 10 transmission will connect the pilot signal that duty ratio is set as value less than 100% (for example 80%).On the other hand, when the connection duty ratio of pilot signal became 100%, charging made charger end charging with ECU immediately.And when the voltage between lines of transmission line 151 becomes assigned voltage when following, charging is judged as charge connector 16 from the insert port removal with ECU.
Thereby, according to the charging device 1 of present embodiment, in the situation that again begin after the charging of interruption to electric automobile 200, can make the charging of electric automobile 200 be identified as " charge connector 16 is from the insert port removal " with ECU.In addition, assigned voltage is to be judged as charge connector 16 from the threshold value of insert port removal for charging with ECU, for example, is set as several volts ~ zero volt special.Wherein, preferred assigned voltage is that zero volt is special.In the following description, suppose that assigned voltage is set to the zero volt spy.
Namely, communication control unit 14 is made as 100% with the connection duty ratio of pilot signal, voltage between lines with transmission line 151 is made as assigned voltage (zero volt is special) afterwards, if passed through afterwards the stand-by time of regulation, make signal processing part 10 begin transmission (vibration) and will connect the pilot signal that duty ratio is set as value less than 100% (for example 80%).Charging is judged as charge connector 16 and has inserted and be connected to insert port when receiving above-mentioned pilot signal with ECU.Afterwards, charging according to the common flow process that has illustrated (flow process shown in Figure 3), according to set the current value of charging current based on the detected higher limit of connection duty ratio of pilot signal, is exported charging instruction to charger with ECU.The charger that receives charging instruction is on one side adjusted charging current in the mode that is no more than the new current value that charging sets with ECU and on one side storage battery is charged.
At this, with reference to the sequential chart of Fig. 2, further describe the charging action of above-mentioned charging device 1.In addition, in the following description, suppose that the threshold value for the higher limit of charging current is defined as 6 amperes, do not allow to charge to electric automobile 200 when charging current is restricted to less than threshold value.
At first, charge connector 16 insert the insert port that is connected to electric automobile 200 and from signal processing part 10 to transmission line 151 applied voltage V1 after, at t1 constantly, charging is depressured to V2 with the voltage level of pilot signal from V1 with ECU.At this moment, in the situation that from the adjusted value of control part 20 indication of electric power monitoring device 2 less than 6 amperes, the communication control unit 14 of charging device 1 is judged as from electric power monitoring device 2 and does not allow (not allowing) to charge to electric automobile 200, does not carry out the vibration of pilot signal.Connect duty ratio in the situation that do not begin the vibration of pilot signal and be maintained 100%, charging is not exported charging instruction to charger with ECU.
Then, when the use of ending load equipment etc. and current sinking reduces, to be changed from the adjusted value of control part 20 indications of electric power monitoring device 2 be more than 6 amperes the time, the communication control unit 14 of charging device 1 is judged as from electric power monitoring device 2 and has allowed to charge to electric automobile 200.Then, communication control unit 14 makes signal processing part 10 stop applying voltage to transmission line 151, makes voltage between lines become zero volt spy (t2 constantly).If from t2 constantly through the regulation stand-by time, communication control unit 14 makes signal processing part 10 again begin to apply voltage to transmission line 151.When applying voltage to transmission line 151, charging is made as V2 (t3 constantly) with ECU with voltage between lines.Signal processing part 10 when voltage between lines being detected and become V2, the vibration of beginning pilot signal (t4 constantly ~).
When charging identifies the higher limit of charging current with ECU when the connection duty ratio that detects pilot signal, the voltage level of pilot signal is depressurized to V3 from V2.When signal processing part 10 was reduced to V3 when the signal level that pilot signal detected from V2, closed opening/closing portion 13 began to supply with charging power.And charging sets according to the higher limit of the charging current that sends from signal processing part 10 current value that is charged to target level for the charging level with storage battery with ECU, and to charger output charging instruction.
In charging process, when changing to below 6 amperes when all current sinking increases etc. from the adjusted value of control part 20 indications of electric power monitoring device 2, the communication control unit 14 of charging device 1 is judged as and does not allow to charge to electric automobile 200.Then, communication control unit 14 makes signal processing part 10 stop the vibration of pilot signal, will connect duty ratio and be maintained 100% (t5 constantly ~).When the vibration of pilot signal is ended and when connecting duty ratio and being maintained 100%, charging stops to charger output charging instruction with ECU.
Afterwards, when the adjusted value of indicating from the control part 20 of electric power monitoring device 2 changes to more than 6 amperes again, the communication control unit 14 of charging device 1 makes signal processing part 10 stop applying voltage to transmission line 151, makes voltage between lines become zero volt spy (t6 constantly).If from t6 constantly through stand-by time, communication control unit 14 makes signal processing part 10 again begin to apply voltage to transmission line 151.When transmission line 151 was applied voltage, charging made voltage between lines become V2 (t7 constantly) with ECU.Signal processing part 10 begins the vibration (t8 constantly ~) of pilot signal again when detecting voltage between lines and become V2.
When charging identifies the higher limit of charging current with ECU when the connection duty ratio that detects pilot signal, the voltage level of pilot signal is depressurized to V3 from V2.When signal processing part 10 was reduced to V3 when the signal level that pilot signal detected from V2, closed opening/closing portion 13 began to supply with charging power.And charging sets according to the higher limit of the charging current that sends from signal processing part the current value that is charged to target level for the charging level with storage battery with ECU, and to charger output charging instruction.
As mentioned above, in the charging device 1 of present embodiment, control unit (communication control unit 14) is in the situation that interrupt again beginning after the charging of electric automobile 200, after the voltage between lines with transmission line 151 is made as zero volt spy (continuing the stand-by time of regulation), make transmission unit (signal processing part 10) transmission signal transmission.That is to say, become the zero volt spy by the voltage between lines that makes transmission line 151, can make the charging of electric automobile 200 be identified as charge connector 16 from the insert port removal with ECU.Therefore, if 10 pairs of transmission lines 151 of signal processing part apply voltage between lines, again begin the vibration of pilot signal, charging can be judged as charge connector 16 with ECU and again inserts and be connected to insert port, begins to charge with common flow process.Consequently can normally again begin charging after interrupting charging.
Claims (4)
1. electric vehicles charging device, this electric vehicles charging device is connected with motor vehicle via charge cable, and via the transmission line signal transmission that is included in above-mentioned charge cable, thus above-mentioned motor vehicle is notified at least the higher limit of charging current, this electric vehicles charging device is characterised in that:
Above-mentioned electric vehicles charging device possesses:
Transmission unit, it is used for transmission and the voltage between lines of above-mentioned transmission line is carried out the signal transmission of pulse-width modulation gained; And
Control unit, it makes above-mentioned transmission unit utilize said transmission signal to transmit the various information that comprise above-mentioned higher limit,
Wherein, in the situation that interrupt again beginning to charge after the charging of above-mentioned motor vehicle, above-mentioned control unit makes above-mentioned transmission unit transmission said transmission signal after making above-mentioned voltage between lines become below assigned voltage.
2. electric vehicles charging device according to claim 1, is characterized in that,
From the state variation that can not charge to the state that can charge the time, above-mentioned control unit makes above-mentioned transmission unit transmission said transmission signal after making above-mentioned voltage between lines become below afore mentioned rules voltage.
3. electric vehicles charging system is characterized in that having:
The electric vehicles charging device of claim 2; And
The electric power monitoring device, it indicates above-mentioned higher limit to above-mentioned control unit,
Wherein, in the situation that from the above-mentioned higher limit of the above-mentioned electric power monitoring device indication threshold value less than regulation, above-mentioned control unit is judged as and can not charges, in the situation that be more than above-mentioned threshold value from the above-mentioned higher limit of above-mentioned electric power monitoring device indication, above-mentioned control unit is judged as and can charges.
4. electric vehicles charging system according to claim 3, is characterized in that,
Above-mentioned electric power monitoring device possesses:
The second current sensor, it is used for measuring the above-mentioned charging current of supplying with to above-mentioned motor vehicle from distribution board; And
The first current sensor, it is used for measuring all current sinkings of supplying with to above-mentioned distribution board from electric power system,
Wherein, the above-mentioned charging current that above-mentioned all current sinkings that above-mentioned electric power monitoring device goes out according to above-mentioned the first current sensor measurement, above-mentioned the second current sensor determine and the rated current of above-mentioned distribution board are come the above-mentioned higher limit of above-mentioned control unit indication.
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| JP2011282046A JP5877370B2 (en) | 2011-12-22 | 2011-12-22 | Electric vehicle charging device and electric vehicle charging system |
| JP2011-282046 | 2011-12-22 |
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| CN103178592A true CN103178592A (en) | 2013-06-26 |
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| JP (1) | JP5877370B2 (en) |
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| KR102006639B1 (en) * | 2018-12-26 | 2019-08-05 | 쌍용자동차 주식회사 | Vehicle diagnosis and reprogramming method using electric vehicle charging interface |
| JP7261983B2 (en) * | 2019-08-02 | 2023-04-21 | パナソニックＩｐマネジメント株式会社 | POWER SUPPLY DEVICE, POWER SUPPLY SYSTEM, POWER SUPPLY METHOD, PROGRAM |
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Also Published As
| Publication number | Publication date |
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| JP5877370B2 (en) | 2016-03-08 |
| CN103178592B (en) | 2015-11-25 |
| JP2013132188A (en) | 2013-07-04 |
| KR101456907B1 (en) | 2014-10-31 |
| KR20130079163A (en) | 2013-07-10 |
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