CN103178592B - Electric vehicles charging device and electric vehicles charging system - Google Patents
Electric vehicles charging device and electric vehicles charging system Download PDFInfo
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- CN103178592B CN103178592B CN201210562552.2A CN201210562552A CN103178592B CN 103178592 B CN103178592 B CN 103178592B CN 201210562552 A CN201210562552 A CN 201210562552A CN 103178592 B CN103178592 B CN 103178592B
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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 present invention relates to a kind of electric vehicles charging device and electric vehicles charging system.When interrupting again starting after the charging of electric automobile (200), control unit (communication control unit 14), after making the voltage between lines of transmission line (151) become below assigned voltage (such as zero volt), makes transmission unit (signal processing part 10) transmit signal transmission.That is, by making the voltage between lines of transmission line (151) become below assigned voltage, the charging ECU of electric automobile (200) can be made to be identified as charge connector (16) from insert port removal.Therefore, if apply to transmission line (151) vibration that voltage between lines starts pilot signal again by signal processing part (10), then charging ECU can be judged as that charge connector (16) inserts again and be connected to insert port, starts charging with common flow process.Consequently normally again can start charging after interruption charging.
Description
Technical field
The present invention relates to a kind of electric vehicles charging device for charging to motor vehicles such as electric automobiles and electric vehicles charging system.
Background technology
As conventional example, such as, there is a kind of charging device recorded in Japanese Patent Publication 2003-333706 publication.This charging device is used for charging to battery type fork truck, powers from device power supply (DPS) by power line is connected to via circuit breaker the supply socket be connected with the device power supply (DPS) in factory.In addition, in charging device, be equipped with communication function, send via order wire between other charging device connected with device power supply (DPS) and receive the information relevant with charged state.
In this conventional example, the current value (total current limits value) that the one or more charging device entirety be connected can use is set as the value specified with device power supply (DPS).And each charging device, after confirming the charge condition of other charging device based on above-mentioned value (total current limits value), is automatically set in the electric current used in charging device.Therefore, do not consider the power supply capacity of device power supply (DPS) charging device being carried out to power supply supply, and suitably set the electric power that when charging to motor vehicle (battery type fork truck), charging device consumes.Therefore, the power supply capacity that user does not set up device power supply (DPS) just can charge to motor vehicle well.
In addition, when charging to motor vehicle (electric automobile) in house, preferably the charging current of restriction electric automobile exceedes the rated value of backbone circuit breaker (or limiter) with the total amount of the electric power avoiding house to consume (electric current).Such as, monitor the electric current flowing through backbone circuit breaker, when this electric current exceedes 90% of the rated current of backbone circuit breaker, charging device stops electric automobile supplying charging current, can prevent the tripping operation of backbone circuit breaker thus.Now, the notice when charging device stops charging being needed can not to charge to motor vehicle.
About the charging to motor vehicle as described above, such as in american car technological associations (SAE) standard, regulation has following content: the pulse-width signal (be called and control pilot signal) transmitting 1kHz from charging device to electric automobile, uses the duty cycle of pulse signal to notify the higher limit of charging current.And, in SAE standard, about the pilot signal that charging device sends out, be defined as when duty cycle being greater than 96% and can not charge.Therefore, charging device, such as by the duty cycle of pulse-width signal is set as 100% (being maintained on-state all the time), can not be able to charge to electric automobile notice.But, when charging device interrupts the charging again started after to the charging of electric automobile electric automobile, when duty cycle is changed to from 100% the value being less than 96%, likely cause in the erroneous judgement of electric automobile side abnormal (such as different according to the car type of electric automobile for creating, when only duty cycle being set to 100% within the very short time, likely erroneous judgement is for creating exception).
Summary of the invention
The present invention completes in view of the above problems, its object is to normally again to start charging after interruption charging.
Electric vehicles charging device of the present invention is connected with motor vehicle via charge cable, and via the transmission line signal transmission be included in above-mentioned charge cable, thus above-mentioned motor vehicle is at least notified to the higher limit of charging current, the feature of this electric vehicles charging device is: above-mentioned electric vehicles charging device possesses: transmission unit, and it carries out the signal transmission of pulse-width modulation gained to the voltage between lines of above-mentioned transmission line for transmitting; And control unit, it makes above-mentioned transmission unit utilize said transmission signal to transmit the various information comprising above-mentioned higher limit, wherein, when interrupting again starting charging after the charging of above-mentioned motor vehicle, above-mentioned control unit becomes after below assigned voltage making above-mentioned voltage between lines, makes above-mentioned transmission unit transmit said transmission signal.
In this electric vehicles charging device, preferably when from the state variation that can not charge to the state that can charge, above-mentioned control unit becomes after below afore mentioned rules voltage making above-mentioned voltage between lines, makes above-mentioned transmission unit transmit said transmission signal.
The feature of electric vehicles charging system of the present invention is to possess: above-mentioned electric vehicles charging device; And electric power monitoring device, it indicates above-mentioned higher limit to above-mentioned control unit, wherein, when being less than the threshold value of regulation from the above-mentioned higher limit of above-mentioned electric power monitoring device instruction, above-mentioned control unit is judged as charging, when being more than above-mentioned threshold value from the above-mentioned higher limit of above-mentioned electric power monitoring device instruction, above-mentioned control unit is judged as charging.
In this electric vehicles charging system, preferably above-mentioned electric power monitoring device possesses: the second current sensor, and it is for measuring the above-mentioned charging current supplied from distribution board to above-mentioned motor vehicle; And first current sensor, it is for measuring all current sinkings supplied from electric power system to above-mentioned distribution board, wherein, the rated current of above-mentioned all current sinkings that above-mentioned electric power monitoring device goes out according to above-mentioned first current sensor measurement, above-mentioned charging current that above-mentioned second current sensor determines and above-mentioned distribution board, indicates above-mentioned higher limit to above-mentioned control unit.
Electric vehicles charging device of the present invention and electric vehicles charging system have the effect that can normally again start to carry out charging after interrupting charging.
Accompanying drawing explanation
Fig. 1 is the system construction drawing of the block diagram of electric vehicles charging device involved by embodiments of the present invention and the electric vehicles charging system involved by embodiments of the present invention.
Fig. 2 is the sequential chart of the action for illustration of the charging device involved by execution mode.
Fig. 3 is the sequential chart of the elemental motion for illustration of the charging device involved by execution mode.
Embodiment
Below, with reference to accompanying drawing, describe in detail technological thought of the present invention to be applied to and be arranged in the house of only, be used for utilizing the execution mode of electric vehicles charging device (hereinafter referred to as charging device) and the system thereof of electric automobile being charged from the electric power of electric power system supply.But motor vehicle is not limited to electric automobile, such as, it also can be the battery type fork truck etc. illustrated by prior art.
As shown in Figure 1, from electric power system 100 via the alternating electromotive force of electric distribution board for apartment (distribution board, hereinafter referred to as house dish) 4 to Residence supply single-phase three-wire formula.House dish 4 has backbone circuit breaker 40 and multiple branch circuit breaker 41.The primary side (input side) of backbone circuit breaker 40 is connected with electric power system 100.Multiple branch circuit breaker 41 branch is connected to the secondary side (outlet side) of backbone circuit breaker 40.That is, the primary side (input side) of each branch circuit breaker 41 is connected with the secondary side (outlet side) of backbone circuit breaker 40.But, also there is the situation inserting limiter (flow restricter) at the primary side of backbone circuit breaker 40.In addition, although the diagram of eliminating, the secondary side (outlet side) of each branch circuit breaker 41 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 as shown in Figure 1, has charging device 1 and electric power monitoring device 2.
Electric power monitoring device 2 possesses control part 20, current measurement portion 21, Department of Communication Force 22 etc.In addition, electric power monitoring device 2 possesses the current sensor (the first current sensor) 210,211 for measuring the electric current supplied from electric power system 100 to house dish 4.The electric current of two electric wires (two pressure-wire) beyond the neutral line that current measurement portion 21 uses current sensor 210,211 to measure to flow through in three electric wires (lamp cord) be connected with the primary side of backbone circuit breaker 40 respectively, and export each measured value to control part 20.Control part 20 take microcomputer as main composition key element, the measured value (magnitude of voltage) of the primary side voltage (input voltage) of the current value measured by current measurement portion 21, backbone circuit breaker 40, comes the instantaneous value, aggregate-value etc. of the electric power (supply electric power) that computing supplies from electric power system 100.In addition, communicate between Department of Communication Force 22 with charging device 1, the serial communication that such as to carry out with RS485 standard be benchmark.But the communication mode of Department of Communication Force 22 is not limited to RS485 standard, also can be power line carrier communication, radio communication (such as low-power wireless communication etc.) etc.
Charging device 1 possesses signal processing part (transmission unit) 10, zero phase current transformer 11, detection of electrical leakage portion 12, opening/closing portion 13, communication control unit (control unit) 14, charge cable 15, charge connector 16 etc.In addition, charging device 1 is arranged on the position near the parking space (garage) of electric automobile (motor vehicle) 200, and the branch circuit (being the branch circuit breaker 41 of downside right-hand member in FIG) branched out with the branch circuit breaker 41 by house dish 4 is connected.Charge cable 15 forms with insulation sheaths covering supply lines 150 and transmission line 151, its fore-end is provided with charge connector 16, wherein, flow through the supply electric current (charging current) supplied to electric automobile 200 in this supply lines 150, this transmission line 151 is for transmitting pilot signal described later.Charge connector 16 and the insert port (import) of the car body being arranged at electric automobile 200 plug freely carries out insertion and is connected.And, when charge connector 16 insertion is connected to insert port, electric power (charging power) can be supplied via house dish 4 and charging device 1 from electric power system 100, and pilot signal can be transmitted between the signal processing part 10 of charging device 1 and the charging ECU (electronic control unit, not shown) of electric automobile 200.
Opening/closing portion 13 has the electromagnetic relay (not shown) of the supply path being inserted into from branch circuit breaker 41 to supply lines 150, by correspondingly close/being disconnected by electromagnetic relay with the instruction from signal processing part 10, carry out the above-mentioned supply path of opening and closing.The unsymmetrical current flowing through supply path is detected in detection of electrical leakage portion 12 by zero phase current transformer 11, when the detection level of this unsymmetrical current exceedes threshold value, be judged as there occurs electric leakage, controls opening/closing portion 13 and supply path is disconnected.Communication control unit 14 has communication function and adjustment function, this communication function to carry out communicating between the Department of Communication Force 22 of electric power monitoring device 2 function of (serial communication of RS485 standard), and this adjustment function adjusts the function to the charging current that electric automobile 200 supplies as described later.Such communication control unit 14 is made up of the integrated circuit etc. of microcomputer and serial communication.In addition, electric power monitoring device 2 possesses the current sensor (the second current sensor) 212 for measuring the charging current supplied from house dish 4 to electric automobile 200.And, in electric power monitoring device 2, measured the electric current (charging current) supplied via charging device 1 pair of electric automobile 200 by current sensor 212.
At this, the sequential chart with reference to Fig. 3 illustrates the basic charging action of charging device 1.First, when charge connector 16 being connected to the insert port of electric automobile 200 in t ' 0 moment, apply the voltage V1 (such as V1=12 volt) of regulation from signal processing part 10 pairs of transmission lines 151.And, the voltage (voltage between lines) being applied to transmission line 151 becomes the transmission medium controlling pilot tone (CPLT) signal (hereinafter referred to as pilot signal), with its voltage level and duty cycle correspondingly, various information of giving and accepting between charging ECU and signal processing part 10 as described later.
Charging ECU is when the pilot signal of voltage V1 being detected, carry out contact resistance by the closed switch be inserted between transmission line 151 and ground connection, make the voltage level of pilot signal be depressured to V2 (such as V2=9 volt) (t ' 1 moment) from V1 thus.Signal processing part 10, when detecting that pilot signal is reduced to V2 from V1, exports the pilot signal (t ' 2 moment ~) with the pulse type of assigned frequency (such as 1kHz).The signal level of this pilot signal is ± V1, but boundary level is pumped down to V2.
The duty cycle of pilot signal represents the higher limit of charging current.Each charging device 1 is preset to the higher limit of the charging current corresponding with duty cycle.Such as in SAE standard, about the pilot signal that charging device 1 sends out, be defined as in the scope of duty cycle more than 10% and below 85%, duty cycle is multiplied by the numerical value (ampere) of 0.6 gained as higher limit (such as when duty cycle is 10%, higher limit is 6 amperes).In addition, be defined as when duty cycle be greater than 85% and below 96%, duty cycle is deducted be multiplied by 2.5 gained after 64 numerical value (ampere) as higher limit.That is, the information (value) of higher limit is transmitted with the be added to voltage between lines of transmission line 151 of pulse-width signal by pilot signal.In addition, about the pilot signal that charging device 1 sends out, in SAE standard, be defined as and be less than in duty cycle the situation that 10% (except 5%) and duty cycle be greater than 96% and represent error condition or do not allow charging.In addition, the situation that to be defined as in duty cycle be 5% represents to be needed to carry out digital communication (with reference to SAEJ1772).
When charging ECU identifies the higher limit of charging current when the duty cycle detecting pilot signal, the voltage level (such as by contact resistance) of pilot signal is depressured to V3 (such as 6 volts) (t ' 3 moment) from V2.Signal processing part 10 is when detecting that the signal level of pilot signal is reduced to V3 from V2, and closed opening/closing portion 13 starts to supply charging power.
Charging uses ECU according to the higher limit of the charging current notified from charging device 1, current value (higher limit of≤charging current) till setting is used for that the charging level of storage battery is charged to target level, and export charging instruction to the charger (not shown) being equipped on electric automobile 200.Receive the charger of charging instruction while carry out adjustment in the mode making charging current be no more than the current value set by charging ECU to charging current while charge (t ' 3 moment ~) to storage battery.When the charging level of storage battery reaches target level, charging ECU terminates the charging to storage battery to charger output charging END instruction, and makes the voltage level of pilot signal return to V2 (t ' 4 moment) from V3.Charger, when receiving charging END instruction, terminates the charging to storage battery.
Signal processing part 10, when detecting that pilot signal is changed to V2 from V3, disconnects opening/closing portion 13 and stops supplying alternating electromotive force.In addition, charge and carry out off resistance with ECU by disconnecting the switch that is connected with transmission line 151, make the voltage level of pilot signal return to V1 (t ' 5 moment) originally thus.Signal processing part 10, when the voltage level of pilot signal returns to V1, stops the vibration of assigned frequency, the voltage level of pilot signal is maintained V1, returns holding state (t ' 6 moment).
The supply of the charging power to electric automobile 200 is connected and cut off to charging device 1 as described above, and to the higher limit that the charging of electric automobile 200 indicates charging current with ECU, control the charging to the storage battery being equipped on electric automobile 200 thus.
But, electric automobile 200 is charged and usually needs the large charging current of tens amperes ~ tens Amps.On the other hand, in common house, the rated current of backbone circuit breaker 40 (being limiter and backbone circuit breaker 40 when being provided with limiter) is set to 30 amperes ~ 60 Amps.Thus, when electric automobile 200 being charged when using the such current sinking of electromagnetic kitchen range, air regulator large load equipment, if flow through the charging current reaching the higher limit preset in charging device 1, then backbone circuit breaker 40, limiter is likely caused to trip.
Therefore, the control part 20 of electric power monitoring device 2 termly (such as one second interval) makes Department of Communication Force 22 send instruction (adjustment instruction), and this instruction is the instruction that current value for the higher limit of charging current being set to current charging current deducts the current value of the difference gained of all current sinkings and rated current.That is, the current value that electric power monitoring device 2 calculates charging current deducts the value of the difference gained of the rated current of all current sinkings and house dish 4, and by this value notice to communication control unit 14.In addition, all current sinkings are the summations of the current sinking (load consumed current) of charging current and load equipment.Such as use the current sensor 210,211 be arranged between electric power system 100 and backbone circuit breaker 40 to measure all current sinkings.
Change a kind of saying, the control part 20 of electric power monitoring device 2 makes Department of Communication Force 22 send instruction (adjustment instruction) termly, and this instruction is the instruction of the difference for the higher limit of charging current being set to rated current and load consumed current.
In charging device 1, the higher limit of charging current is set to below the higher limit indicated by adjustment instruction by the communication control unit 14 index signal handling part 10 receiving the adjustment instruction sent from electric power monitoring device 2.And signal processing part 10, when receiving the instruction from communication control unit 14, changes the duty cycle of pilot signal according to the adjustment instruction indicated from communication control unit 14.Such as, when the current capacity (can flow through the tolerance of the electric current of charge cable 15) of charge cable 15 is 30 amperes, be originally 50% duty cycle such as reduce to 40% ~ 20%, result is that the higher limit of charging current is adjusted to than ampere low value of 30 originally (such as 15 amperes).But, if the higher limit of last time is identical with this higher limit, then do not change duty cycle.In addition, communication control unit 14 also can use from Department of Communication Force 22 by adjusting the value repeatedly of the value indicated by instruction.Such as, communication control unit 14 also can be the structure etc. of the higher limit indicating charging current based on the mean value of value repeatedly to signal processing part 10.
The charging ECU of electric automobile 200 sets the current value of charging current again according to the higher limit after adjustment, and exports charging instruction to charger.Receive the charger of charging instruction while adjust charging current while charge to storage battery in the mode being no more than the new current value set by charging ECU.The charging current consequently supplied electric automobile 200 is below the higher limit of signal processing part 10 setting, therefore, it is possible to avoid all current sinkings to exceed the rated current of backbone circuit breaker 40.
But, in order to make charging device 1 reduce charging current, being indicated to till the actual minimizing in electric automobile 200 side charging current from sending electric automobile 200, producing quite long time of delay.Such as, if suppose that receive adjustment instruction from communication control unit 14 needs time T2, needs time T3, then the delay of generation time T1 (=T2+T3) to electric automobile 200 and pilot signal correspondingly reduce charging current to changing the duty cycle of pilot signal.Consequently in backbone circuit breaker 40 at least continue time of delay T1 flow through overload electric current, therefore, when time of delay, T1 exceeded the trip operation time of backbone circuit breaker 40, likely cause backbone circuit breaker 40 to trip.Further, in most cases different according to the car type of electric automobile 200, the time T2 needed to changing the duty cycle of pilot signal is different.
Therefore, in order to prevent the backbone circuit breaker 40 when reducing the higher limit of charging current from tripping, preferably making charging ECU brief interruption charge, when again starting to charge, the higher limit of charging current being adjusted to than value low before interruption.At this, as illustrated in the prior art, stop needing during charging to notify that charging stops to electric automobile 200 at charging device 1.As illustrated in the prior art, notify the method that charging stops to there is the method duty cycle of pilot signal being set to 100% as from charging device 1.But, when transformation period etc. in the state variation defining pilot signal, when the duty cycle of pilot signal being set to value (such as 80%) being again set smaller than 100% after 100% in charging process, different according to the car type of electric automobile 200, likely produce the exception of not expecting.
In addition, as other problem points, when the value of charging current is little, because there is internal resistance etc., therefore sufficient electric power cannot be supplied from distribution board to charger.Thus, such as in SAE standard not regulation charging current be set to be less than 6 amperes.Therefore, such as when SAE standard followed by charging device 1, when the use due to load equipment etc., the feasible value of charging current is reduced to less than 6 ampere-hours, and charging device 1 (such as the duty cycle of pilot signal being set to 100%) interrupts charging.In this case, when the duty cycle of pilot signal being set to the value being again set smaller than 100% after 100% in charging process, different according to the car type of electric automobile 200, likely produce the exception of not expecting.
Therefore, in the present embodiment, when again starting after having interrupted the charging to electric automobile 200, after the voltage between lines of transmission line 151 to be set to below assigned voltage (continuing the stand-by time of regulation) by communication control unit 14 control signal handling part 10, signal processing part 10 is transmitted duty cycle to be set smaller than the pilot signal of the value (such as 80%) of 100%.On the other hand, when the duty cycle of pilot signal becomes 100%, charge with ECU make immediately charger stop charging.Further, when the voltage between lines of transmission line 151 becomes below assigned voltage, charging is judged as charge connector 16 from insert port removal with ECU.
Thus, charging device 1 according to the present embodiment, when again starting after interrupting the charging to electric automobile 200, can make the charging ECU of electric automobile 200 be identified as " charge connector 16 is from insert port removal ".In addition, assigned voltage is judged as charge connector 16 from the threshold value of insert port removal for charging with ECU, such as, is set as several volts ~ zero volt.Wherein, preferred assigned voltage is zero volt.In the following description, suppose that assigned voltage is set to zero volt.
Namely, the duty cycle of pilot signal is set to 100% by communication control unit 14, afterwards the voltage between lines of transmission line 151 is set to assigned voltage (zero volt), if have passed through the stand-by time of regulation afterwards, then signal processing part 10 is made to start to transmit the pilot signal that duty cycle is set smaller than the value (such as 80%) of 100% by (vibration).Charging ECU is judged as that when receiving above-mentioned pilot signal charge connector 16 has inserted and is connected to insert port.Afterwards, charging ECU is according to the common flow process illustrated (flow process shown in Fig. 3), and the higher limit detected according to the duty cycle based on pilot signal sets the current value of charging current, exports charging instruction to charger.Receive the charger of charging instruction while adjust charging current while charge to storage battery in the mode being no more than the new current value set by charging ECU.
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, assuming that be defined as 6 amperes for the threshold value of the higher limit of charging current, do not allow when charging current is restricted to and is less than threshold value to charge to electric automobile 200.
First, insert the insert port that is connected to electric automobile 200 and from signal processing part 10 to after transmission line 151 is applied with voltage V1 at charge connector 16, in the t1 moment, charging is depressured to V2 by the voltage level of pilot signal from V1 with ECU.Now, when the adjusted value indicated from the control part 20 of electric power monitoring device 2 is less than 6 amperes, the communication control unit 14 of charging device 1 is judged as not allowing (not allowing) to charge to electric automobile 200 from electric power monitoring device 2, does not carry out the vibration of pilot signal.When not starting the vibration of pilot signal, duty cycle is maintained 100%, charge with ECU not to charger output charging instruction.
Then, when the adjusted value that current sinking reduces when the use etc. stopping load equipment, indicate from the control part 20 of electric power monitoring device 2 is changed to more than 6 amperes, the communication control unit 14 of charging device 1 is judged as allow for from electric power monitoring device 2 charging 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 (t2 moment).If have passed through the stand-by time of regulation from the t2 moment, then communication control unit 14 makes signal processing part 10 again start to apply voltage to transmission line 151.When applying voltage to transmission line 151, charging is set to V2 (t3 moment) with ECU by voltage between lines.Signal processing part 10, when detecting that voltage between lines becomes V2, starts the vibration (t4 moment ~) of pilot signal.
When charging ECU identifies the higher limit of charging current when the duty cycle detecting pilot signal, the voltage level of pilot signal is depressurized to V3 from V2.Signal processing part 10 is when detecting that the signal level of pilot signal is reduced to V3 from V2, and closed opening/closing portion 13 starts to supply charging power.Further, charging ECU sets the current value for the charging level of storage battery being charged to target level according to the higher limit of the charging current sent from signal processing part 10, and exports charging instruction to charger.
In charging process, when changing to below 6 amperes from the adjusted value that the control part 20 of electric power monitoring device 2 indicates when all current sinking increases etc., the communication control unit 14 of charging device 1 is judged as not allowing to charge to electric automobile 200.Then, communication control unit 14 makes signal processing part 10 stop the vibration of pilot signal, duty cycle is maintained 100% (t5 moment ~).When the vibration termination of pilot signal, duty cycle is maintained 100%, charging stops exporting charging instruction to charger with ECU.
Afterwards, when the adjusted value indicated 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 (t6 moment).If have passed through stand-by time from the t6 moment, then communication control unit 14 makes signal processing part 10 again start to apply voltage to transmission line 151.When applying voltage to transmission line 151, charging makes voltage between lines become V2 (t7 moment) with ECU.Signal processing part 10, when detecting that voltage between lines becomes V2, starts the vibration (t8 moment ~) of pilot signal again.
When charging ECU identifies the higher limit of charging current when the duty cycle detecting pilot signal, the voltage level of pilot signal is depressurized to V3 from V2.Signal processing part 10 is when detecting that the signal level of pilot signal is reduced to V3 from V2, and closed opening/closing portion 13 starts to supply charging power.Further, charging ECU sets the current value for the charging level of storage battery being charged to target level according to the higher limit of the charging current sent from signal processing part, and exports charging instruction to charger.
As mentioned above, in the charging device 1 of present embodiment, control unit (communication control unit 14) is when interrupting again starting after the charging of electric automobile 200, after the voltage between lines of transmission line 151 being set to zero volt (continuing the stand-by time of regulation), transmission unit (signal processing part 10) is made to transmit signal transmission.That is, by making the voltage between lines of transmission line 151 become zero volt, the charging ECU of electric automobile 200 can be made to be identified as charge connector 16 from insert port removal.Therefore, if signal processing part 10 pairs of transmission lines 151 apply voltage between lines, again start the vibration of pilot signal, then charging ECU can be judged as that charge connector 16 inserts again and be connected to insert port, starts to charge with common flow process.Consequently normally again can start charging after interruption charging.
Claims (4)
1. an electric vehicles charging device, this electric vehicles charging device is by the higher limit of electric power monitoring device instruction charging current, and be connected with motor vehicle via charge cable, and via the transmission line signal transmission be included in above-mentioned charge cable, at least notify above-mentioned higher limit to above-mentioned motor vehicle thus, the feature of this electric vehicles charging device is:
Above-mentioned electric vehicles charging device possesses:
Transmission unit, it carries out the signal transmission of pulse-width modulation gained to the voltage between lines of above-mentioned transmission line for transmitting; And
Control unit, it makes above-mentioned transmission unit utilize said transmission signal to transmit the various information comprising above-mentioned higher limit,
Wherein, when being more than the threshold value of regulation from the above-mentioned higher limit of above-mentioned electric power monitoring device instruction, above-mentioned control unit is judged as charging and making above-mentioned transmission unit start the transmission of said transmission signal,
If above-mentioned higher limit changes to and is less than above-mentioned threshold value in charging, then above-mentioned control unit is judged as charging and makes above-mentioned transmission unit stop the transmission of said transmission signal, interrupts the charging to above-mentioned motor vehicle,
Have no progeny in above-mentioned the charging again started to above-mentioned motor vehicle, above-mentioned control unit make above-mentioned voltage between lines become below assigned voltage and continue regulation stand-by time after, above-mentioned transmission unit is made to transmit said transmission signal, wherein, afore mentioned rules voltage is for being judged as charge connector from the threshold value of insert port removal.
2. electric vehicles charging device according to claim 1, is characterized in that,
When from the state variation that can not charge to the state that can charge, above-mentioned control unit makes above-mentioned voltage between lines become below afore mentioned rules voltage and after the stand-by time of lasting afore mentioned rules, is making above-mentioned transmission unit transmit said transmission signal.
3. an electric vehicles charging system, is characterized in that, has:
The electric vehicles charging device of claim 2; And
Above-mentioned electric power monitoring device.
4. electric vehicles charging system according to claim 3, is characterized in that,
Above-mentioned electric power monitoring device possesses:
Second current sensor, it is for measuring the above-mentioned charging current supplied from distribution board to above-mentioned motor vehicle; And
First current sensor, it is for measuring all current sinkings supplied from electric power system to above-mentioned distribution board,
Wherein, the rated current of above-mentioned all current sinkings that above-mentioned electric power monitoring device goes out according to above-mentioned first current sensor measurement, above-mentioned charging current that above-mentioned second current sensor determines and above-mentioned distribution board, indicates above-mentioned higher limit to above-mentioned control unit.
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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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| DE102015101041A1 (en) * | 2015-01-26 | 2016-07-28 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Electric charging device, electric charging station and method for controlling an electric charging device |
| CN105932739A (en) * | 2016-06-01 | 2016-09-07 | 肇庆高新区凯盈顺汽车设计有限公司 | Charging device for electric automobile |
| JP7092032B2 (en) * | 2016-09-30 | 2022-06-28 | 日本電気株式会社 | Charging system, charging controller, charger, information device, charging method and recording medium |
| 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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| JP5491847B2 (en) * | 2009-12-21 | 2014-05-14 | パナソニック株式会社 | Electric vehicle power supply system |
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| CN103178592A (en) | 2013-06-26 |
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| KR20130079163A (en) | 2013-07-10 |
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