CN109484224A - A kind of charging device of electric automobile having power flexible distribution function - Google Patents
A kind of charging device of electric automobile having power flexible distribution function Download PDFInfo
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- 238000007600 charging Methods 0.000 title claims abstract description 256
- 238000005315 distribution function Methods 0.000 title claims abstract description 8
- 238000013461 design Methods 0.000 claims abstract description 5
- 239000011159 matrix material Substances 0.000 claims description 16
- 238000009413 insulation Methods 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 5
- 230000000977 initiatory effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 206010048669 Terminal state Diseases 0.000 claims 1
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000005622 photoelectricity Effects 0.000 claims 1
- 230000008901 benefit Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 230000001012 protector Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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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
Abstract
The invention discloses a kind of charging device of electric automobile for having power flexible distribution function, including the reator body, L charging terminal, micro-chip processor of charging, L is greater than 2 positive integer, and charging reator body and charging terminal belong to Distributed Design, and charging terminal setting is on charging parking stall；The reator body that charges is electrically connected with several charging terminals respectively by power supply line；On charging reator body, the first signal output end of micro-chip processor is electrically connected with the signal input part of charging reator body for micro-chip processor setting；The signal input part of micro-chip processor is connect with the signal output end signal of several charging terminals respectively.The present invention reduces the objective requirement of charging parking stall in position, work noise is also reduced by the way that power supply and charging equipment are carried out distributed placement；Secondly, power control module sufficiently calls each power module, the utilization rate of equipment ensure that, so that its actual power is reached rated value, there is a phenomenon where power dissipations.
Description
Technical field
The present invention relates to charging equipment of electric automobile fields, have power flexible distribution function more particularly, to one kind
Charging device of electric automobile.
Background technique
With the fast development of pure electric automobile industry, new-energy automobile is current strategic new industry, and therewith
Matched electrically-charging equipment is the key that new-energy automobile industry development.Under the promotion energetically of country, from 2015, publication was simultaneously
Carry out the national standard for charging equipment --- " GB/T 18487.1-2015 electric car conduction charging system part 1
General Requirement ", " GB/T 20234.2-2015 electric car conduction chargeable connection device part 2: alternating-current charging interface ",
" GB/T 20234.3-2015 electric car conduction chargeable connection device third portion: direct-current charging interface ", " GB/T
Communication protocol between the off-board conduction-type charger of 27930-2015 electric car and battery management system ".In each standard
Stringent guide under, the interaction of charging equipment and electric car has clear, careful communication protocol, and outfit standard is inserted
Head.Various types of electric cars, as long as meet requirements of the national standard, there is standardized charging interface, it can be in office
It charges under He Yitai charging equipment.
Nevertheless, the rate of charge of batteries of electric automobile is not high for a long time, the charging time is too long, charging pile/charging
Ratio too low status in parking stall leverages general citizen for the confidence of purchase new-energy automobile.For above situation, fill
If power station operator faces awkward condition --- charging pile/charging parking stall ratio is improved, charge power is bigger fills for configuration
Electric equipment can preferably service electronic car owner certainly.But following problems will be brought:
1. equipment input cost early period increases；
2. runing phase equipment management cost to increase；
3. separate unit charging equipment volume is excessive；
4. separate unit charging equipment utilization rate is not high；
For example, the technical restriction according to current charging gun, single maximum charging current of rifle are 250A, maximum charge function
Rate is 180KW.The fast charge DC generator that one specified charge power is 180KW, volume is about 800*500*1800mm, and quotation is about
For 0.7 yuan/W.
In order to improve the utilization rate of charging equipment, the occupied area and equipment input cost early period of charging equipment, industry are reduced
Interior Normal practice is the structure type of a machine multiple gun, common for 1 machine, 2 rifle.Recently, the form of 1 machine, 4 rifle is also gradually runed
Quotient uses.After the structure type of one machine multiple gun occurs, the charge power of separate unit formula charging equipment can break through 180KW.
But the power of charging equipment is bigger, and the volume of equipment is also bigger.Excessive equipment is not appropriate for being mounted on charging vehicle
Position side.Therefore, charging equipment is divided into 2 portions by the concept for having also been proposed split type charging equipment in the industry from structure
Point --- direct current output part is defined as seperated stake, and alternating current-direct current power conversion part is defined as power cabinet.Each producer is different
Hardware plan, by functions of the equipments be divided into power cabinet in seperated stake.Similar, a multiple gun can also be used in seperated stake
Form, it is common for 12 rifle.
Either monomer-type or split type charging equipment, when there are multiple gun form, Ying Yaoqiu device controller energy
Enough foundation actual conditions reasonable distribution charge powers are simply shared equally (i.e. every the specified of charging gun to each charging gun
Power invariability is constant) or wheel fill that (any moment only has a charging gun to charge, and starts next after a vehicle charging complete
Vehicle), so that each electric vehicle be made to quickly complete benefit electricity.And if the realization mechanism of power distribution is less reliable, function division
Interface is not reasonable, then the maintenance cost in equipment later period is high.
As it can be seen that one is executed reasonable power dispatch logic, is realized charge power dynamic allocation, function knot with reliable form
Structure divides reasonable charging equipment (charging system in other words), for charging station operator, new energy vehicle car owner, suffers from greatly
Benefit, it is also very necessary.
Summary of the invention
The present invention overcomes existing defects, provide the new electric car for having power flexible distribution function of one kind and fill
Electric installation.The present invention reduces charging parking stall in position objective by the way that power supply and charging equipment are carried out distributed placement
It is required that work noise is also reduced；Secondly, power control module sufficiently calls each power module, the benefit of equipment ensure that
With rate, its actual power is set to reach rated value, there is a phenomenon where power dissipations.
In order to solve the above technical problems, technical scheme is as follows:
A kind of charging device of electric automobile having power flexible distribution function, including charging reator body, L charging are eventually
End, micro-chip processor and program module, the L are greater than 2 positive integer, wherein
The charging reator body and charging terminal belong to Distributed Design, and charging terminal setting is on charging parking stall；
The charging reator body is electrically connected with several charging terminals respectively by power supply line；
The micro-chip processor setting is on charging reator body, the first signal output end and charging heap of micro-chip processor
The signal input part of ontology is electrically connected；
The signal input part of the micro-chip processor is connect with the signal output end signal of L charging terminal respectively；
The program module adjusts charging reator body according to the power demand of each charging terminal and is directed to each charging eventually
The output power at end, and program module is stored in micro-chip processor, the program module, which is performed, to be performed the steps of
S1: the starting time of all charging terminals is acquired, and charging terminal is ranked up according to the starting time；
S2: according to the sequence of charging terminal, the priority of each charging terminal starting is assigned；
S3: according to the BMS communication message of charging terminal, the power demand (U, I) of each charging terminal is obtained；
S4: according to the power demand (U, I) of single charging terminal, the power characteristic of the power module of combined charge reator body
Curve i=f (u) obtains the maximum output current i of single power modulemax；
S5: according to the maximum output current i of single power modulemaxJudged, obtains the needs of single charging terminal
The number m of the power module and group number g for needing power module to be started；The m=g*h, the h indicate every group of power supply mould
The number of block；
S6: the number m of power module as needed and the currently practical free time power module number M numerical relation,
Determining finally needs power module number to be started and power module group number, and determines the output voltage and electricity of single power module
Stream；
S7: circulation executes S3~S6, until obtaining the output voltage and output electric current of all charging terminals；
S8: charging reator body adjusts each charging eventually according to the output voltage and output electric current of all charging terminals of S7
The output power at end.
In a preferred solution, the Rule of judgment in the S5 is expressed by following formula:
Wherein, the I%imaxIt indicates to I ÷ imaxIt takes the remainder；The δ indicates error, artificial preset value；Described
[m/h] indicates the value round numbers to m ÷ h.
In a preferred solution, the S6 includes the following contents:
When the number m of power module if desired≤be labeled as the power module number M of " free time " state, i.e. " free time " shape
The power module of state can satisfy demand, and g group (1,2...g) total m (m=h × g) a power module is labeled as " occupancy " shape
State, wherein the output voltage of each power module is u=U, and the output electric current i of each power module is expressed by following formula:
If desired the number m > of power module is labeled as when the power module number M > 0 of " free time " state " free time "
The power module of state is insufficient for needing, and be idle by M label " all label is occupancy for the power module of state "
State, wherein the output voltage of each power module is u=U, and the output electric current i of each power module carries out table by following formula
It reaches:
I=imax
If desired 0 > of number m > of power module is labeled as being not present when the power module number M of " free time " state
When the power module of " free time " state, according to the starting time of charging terminal, when choosing the above power module of occupancy N group and starting
Between charging terminal the latest, be defined as charging terminal O, the N is no less than 2 positive integer；The charging terminal O release
1 group of power module, the power module are changed to current charging terminal " occupancy " state from charging terminal O " occupancy " state, when
The output voltage of the power module of preceding charging terminal is u=U, and the output electric current i of each power module is expressed by following formula:
And jump to S5 recalculate charging terminal O needs power module output voltage and output electric current.
In a preferred solution, the program module is further comprising the steps of:
S9: charging terminal completes the case where charging if it exists, then will complete all power modules of the charging terminal of charging
It is discharged, the state of above-mentioned power supply group is updated to " free time " state, updates M value；And according to the sequence of charging terminal, institute is traversed
The charging terminal of some chargings, to the number m and power module group of the power module of the needs of the charging terminal of all chargings
Number g is updated, and is judged according to updated m, all electricity according to judging result to the charging terminal for completing charging
The state of source module is modified；Execute S3.
In a preferred solution, it includes the following contents that the updated m value, which carries out judgement:
If when the power module number that updated m value > charging terminal occupies, by power supply mould occupied by the charging terminal
Bulk state mark is " free time " state, updates M value, and execute S6；
If being not processed when the power module number that the updated m value≤charging terminal occupies.
In a preferred solution, the charging reator body includes P group power module, L power control module, institute
The input terminal for the power control module stated is electrically connected with several power modules respectively, the output end of the power control module
Power output end as charging reator body is electrically connected with charging terminal, and the power control module is by micro-chip processor
Control；The P is positive integer and P >=L.
In a preferred solution, the power control module includes switch matrix, and the switch matrix includes P
Direct-flow input circuit, each direct-flow input circuit are electrically connected with 1 group of power module；The switch matrix has 1 direct current
Output circuit, output end of the DC output circuit as power control module；Switch matrix is by micro-chip processor
Control, Q direct-flow input circuit conducting of any selection, the Q is positive integer and Q≤P.
In a preferred solution, the charging terminal includes microprocessor, touch screen, charging gun and direct current input
Interface, wherein
The direct current input interface is electrically connected as the input terminal of charging terminal with DC output circuit；
The charging gun is electrically connected with direct current input interface and control of the charging gun by microprocessor；
The touch screen is bi-directionally connected with microprocessor；
The microprocessor is connect with micro-chip processor signal, and the signal output end of microprocessor is as charging terminal
Signal output end.
In a preferred solution, the charging terminal further includes card reader, the signal output of the card reader
End is electrically connected with the first signal input part of microprocessor, and the card reader is for deducting fees and authenticating.
In a preferred solution, the charging terminal further includes insulation monitoring module, the Insulation monitoring mould
The signal output end of block and the second signal input terminal of microprocessor carry out signal connection, Insulation monitoring by optocoupler components
Module judges the state of insulation inside charging terminal before being used for charge initiation.
In a preferred solution, the charging reator body further includes heat radiation module, and the heat radiation module is used for
The heat externally generated when the work of release power module.Since charging reator body has used a large amount of power module, distribute
Heat it is very high, the demand to heat dissipation is very big.
Compared with prior art, the beneficial effect of technical solution of the present invention is:
1, the present invention reduces the visitor of charging parking stall in position by the way that power supply and charging equipment are carried out distributed placement
It sees and requires, installation is more flexible, and noise is also reduced；
2, power control module sufficiently calls each power module, ensure that the utilization rate of equipment, reaches its actual power
To rated value, there is a phenomenon where power dissipations；
3, to the unified call of power module, be conducive to safeguard a management, unified cooling, wet down work can be carried out.
Detailed description of the invention
Fig. 1 is the module diagram of embodiment.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；
In order to better illustrate this embodiment, the certain components of attached drawing have omission, zoom in or out, and do not represent actual product
Size；
To those skilled in the art, it is to be understood that certain known features and its explanation, which may be omitted, in attached drawing
's.
The following further describes the technical solution of the present invention with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of charging device of electric automobile for having power flexible distribution function, including charging reator body, 8
A charging terminal, NUC972 family chip and program module, wherein
Charging reator body and charging terminal belong to Distributed Design, and charging terminal setting is on charging parking stall；And the heap that charges
Ontology may be located remotely from charging parking stall and carry out concentrated setting；
The reator body that charges is electrically connected with 8 charging terminals respectively by power supply line；
The setting of NUC972 family chip is on charging reator body, the first signal output end of NUC972 family chip and charging
The signal input part of reator body is electrically connected.
Wherein, charging reator body includes 8 groups of power modules, and every group of power module includes 3 power modules；8 power controls
Molding block, heat radiation module and Surge Protector, the input terminal of power control module are electrically connected with 8 groups of power modules respectively, power
The output end of control module is electrically connected as the power output end of charging reator body with charging terminal, and power control module includes opening
Matrix is closed, switch matrix includes 8 direct-flow input circuits, and each direct-flow input circuit is electrically connected with 1 group of power module；Switch
Matrix has 1 DC output circuit, output end of the DC output circuit as power control module；Switch matrix is by NUC972
The control of family chip；Switch matrix further includes switch matrix, if selecting the main line of 8 direct-flow input circuits by switch matrix
Collaborated, realizes the function of power control.Surge Protector provides inductive lightning surge protection.Wind is offered on charging reator body
Heat in air duct is discharged by heat radiation module, realizes unified heat dissipation by road.
Wherein, charging terminal includes STM32F family chip, touch screen, charging gun, card reader, insulation monitoring module, wave
Surge protector and direct current input interface, direct current input interface are electrically connected as the input terminal of charging terminal with DC output circuit；
Charging gun is electrically connected with direct current input interface and control of the charging gun by STM32F family chip；Touch screen and STM32F series
Chip is bi-directionally connected；STM32F family chip is connect with NUC972 family chip signal, the signal output of STM32F family chip
Hold the signal output end as charging terminal；The signal output end of card reader and the first signal input part of STM32F family chip
Electrical connection, card reader is for deducting fees and authenticating；The signal output end of insulation monitoring module and the second letter of STM32F family chip
Number input terminal carries out signal connection by optocoupler components, and insulation monitoring module is used for before charge initiation to charging terminal inside
State of insulation judged；Surge Protector provides inductive lightning surge protection.
Wherein, program module adjusts charging reator body according to the power demand of each charging terminal and is directed to each charging terminal
Output power, and program module is stored in NUC972 family chip, and program module, which is performed, to be performed the steps of
S1: the starting time of all charging terminals is acquired, and charging terminal is ranked up according to the starting time；
S2: according to the sequence of charging terminal, the priority of each charging terminal starting is assigned；
S3: according to the BMS communication message of charging terminal, the power demand (U, I) of each charging terminal is obtained；
S4: according to the power demand (U, I) of single charging terminal, the power characteristic of the power module of combined charge reator body
Curve i=f (u) obtains the maximum output current i of single power modulemax；
S5: according to the maximum output current i of single power modulemaxFollowing judgement is carried out, the need of single charging terminal are obtained
The number m for the power module the wanted and group number g for needing power module to be started:
Wherein, I%imaxIt indicates to I ÷ imaxIt takes the remainder；δ indicates error, artificial preset value；[m/3] is indicated to m ÷'s 3
It is worth round numbers；
S6: the number m of power module as needed and the currently practical free time power module number M numerical relation,
Determining finally needs power module number to be started and power module group number, and determines the output voltage and electricity of single power module
Stream:
When the number m of power module if desired≤be labeled as the power module number M of " free time " state, i.e. " free time " shape
The power module of state can satisfy demand, and g group (1,2...g) total m (m=h × g) a power module is labeled as " occupancy " shape
State, wherein the output voltage of each power module is u=U, and the output electric current i of each power module is expressed by following formula:
If desired the number m > of power module is labeled as when the power module number M > 0 of " free time " state " free time "
The power module of state is insufficient for needing, and be idle by M label " all label is occupancy for the power module of state "
State, wherein the output voltage of each power module is u=U, and the output electric current i of each power module carries out table by following formula
It reaches:
I=imax
If desired 0 > of number m > of power module is labeled as being not present when the power module number M of " free time " state
When the power module of " free time " state, according to the starting time of charging terminal, when choosing the above power module of occupancy N group and starting
Between charging terminal the latest, be defined as charging terminal O, N is no less than 2 positive integer；Charging terminal O discharges 1 group of power module,
Power module is changed to current charging terminal " occupancy " state, the power supply mould of current charging terminal from charging terminal O " occupancy " state
The output voltage of block is u=U, and the output electric current i of each power module is expressed by following formula:
And jump to S5 recalculate charging terminal O needs power module output voltage and output electric current；
S7: circulation executes S3~S6, until obtaining the output voltage and output electric current of all charging terminals；
S8: charging reator body adjusts each charging eventually according to the output voltage and output electric current of all charging terminals of S7
The output power at end；
S9: charging terminal completes the case where charging if it exists, then will complete all power modules of the charging terminal of charging
It is discharged, the state of above-mentioned power supply group is updated to " free time " state, updates M value；And according to the sequence of charging terminal, institute is traversed
The charging terminal of some chargings, to the number m and power module group of the power module of the needs of the charging terminal of all chargings
Number g is updated, and is judged according to updated m, all electricity according to judging result to the charging terminal for completing charging
The state of source module is modified；Execute S3:
If when the power module number that updated m value > charging terminal occupies, by power supply mould occupied by the charging terminal
Bulk state mark is " free time " state, updates M value, and execute S6；
If being not processed when the power module number that the updated m value≤charging terminal occupies；
And judged according to updated m, all power supply moulds according to judging result to the charging terminal for completing charging
The state of block is modified；Execute S3.
The present embodiment the utility model has the advantages that
1, the present embodiment uses split-type design, and the charging terminal being installed on beside charging parking stall includes touch screen, is free of
Power module, work noise is small, and user experience is good.And power module is centrally placed in the reator body that charges, although volume is larger,
It is charging station suitable location can be placed on integral type, rather than must be placed at by charging parking stall.It is needed more from installation
Be it is flexible, meet the construction needs of charging station network operator.
2, due to the distribution of function, it can allow each device work in environment preferably, rather than be stacked into
Unit and touch screen in inside one cabinet, are placed in charging terminal, without enduring the high temperature from power module；And
It charges in reator body, can be equipped with more efficient heat dissipation wind channel, guarantee that internal operating temperature, humidity are suitable for.In this way, big
MTBF is improved greatly, is also beneficial to final-period management maintenance.
3, power control module undertakes the realization device of switch matrix using DC relay, has easy to control, performance
Reliably, simple advantage is safeguarded.Single DC relay has 1,000,000 mechanical lives, can be driven using 12VDC power supply
It is dynamic, and with stateful feedback contact.
4, in power dispatch logic, the expection for meeting charging station operator, electric vehicle car owner, clear logic have been accomplished
Rationally, each power module is sufficiently called, ensure that the utilization rate of equipment, so that its actual power is reached rated value, function does not occur
Rate waste.
The same or similar label correspond to the same or similar components；
The terms describing the positional relationship in the drawings are only for illustration, should not be understood as the limitation to this patent.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (10)
1. a kind of charging device of electric automobile for having power flexible distribution function, which is characterized in that including the reator body, L of charging
A charging terminal, micro-chip processor and program module, the L are greater than 2 positive integer, wherein
The charging reator body and charging terminal belong to Distributed Design, and charging terminal setting is on charging parking stall；
The charging reator body is electrically connected with several charging terminals respectively by power supply line；
The micro-chip processor setting is on charging reator body, the first signal output end and charging reator body of micro-chip processor
Signal input part electrical connection；
The signal input part of the micro-chip processor is connect with the signal output end signal of L charging terminal respectively；
The program module adjusts charging reator body for each charging terminal according to the power demand of each charging terminal
Output power, and program module is stored in micro-chip processor, the program module, which is performed, to be performed the steps of
S1: the starting time of all charging terminals is acquired, and charging terminal is ranked up according to the starting time；
S2: according to the sequence of charging terminal, the priority of each charging terminal starting is assigned；
S3: according to the BMS communication message of charging terminal, the power demand (U, I) of each charging terminal is obtained；
S4: according to the power demand (U, I) of single charging terminal, the power characteristic of the power module of combined charge reator body
I=f (u) obtains the maximum output current i of single power modulemax；
S5: according to the maximum output current i of single power modulemaxJudged, obtains the power supply of the needs of single charging terminal
The number m of the module and group number g for needing power module to be started；The m=g*h, the h indicate every group of power module
Number；
S6: the number m of power module as needed and the currently practical free time power module number M numerical relation, determine
Power module number to be started and power module group number are finally needed, and determines the output voltage and electric current of single power module；
S7: circulation executes S3~S6, until obtaining the output voltage and output electric current of all charging terminals；
S8: charging reator body adjusts each charging terminal according to the output voltage and output electric current of all charging terminals of S7
Output power.
2. charging device of electric automobile according to claim 1, which is characterized in that the Rule of judgment in the S5 passes through
Following formula is expressed:
Wherein, the I%imaxIt indicates to I ÷ imaxIt takes the remainder；The δ indicates error, artificial preset value；[the m/
H] value round numbers of the expression to m ÷ h.
3. charging device of electric automobile according to claim 1 or 2, which is characterized in that the S6 includes the following contents:
It is empty by M label when the number m of power module if desired≤be labeled as the power module number M of " free time " state
G group in the power module of spare time " state needs power module to be started to be labeled as " occupancy " state, wherein each power module
Output voltage be u=U, the output electric current i of each power module expressed by following formula:
If desired the number m > of power module be labeled as " free time " state power module number M > 0 when, by M mark be
All label is occupancy to the power module of " free time " state " state, wherein the output voltage of each power module is u=U, often
The output electric current i of a power module is expressed by following formula:
I=imax
If desired when 0 > of number m > of power module is labeled as the power module number M of " free time " state, eventually according to charging
The starting time at end is chosen and occupies the above power module of N group and start the charging terminal of time the latest, is defined as charging terminal O,
The N is no less than 2 positive integer；The charging terminal O discharges 1 group of power module, and the power module is from charging
Terminal O " occupancy " state is changed to current charging terminal " occupancy " state, and the output voltage of the power module of current charging terminal is u
The output electric current i of=U, each power module are expressed by following formula:
And jump to S5 recalculate charging terminal O needs power module output voltage and output electric current.
4. charging device of electric automobile according to claim 3, which is characterized in that the program module further includes following
Step:
S9: charging terminal completes the case where charging if it exists, then all power modules that will complete the charging terminal of charging carry out
Release, the state of above-mentioned power supply group are updated to " free time " state, update M value；And according to the sequence of charging terminal, traverse all
The charging terminal of charging, number m and power module group number g to the power module of the needs of the charging terminal of all chargings into
Row updates, and is judged according to updated m, all power modules according to judging result to the charging terminal for completing charging
State modify；Execute S3.
5. charging device of electric automobile according to claim 4, which is characterized in that according in charging shape in the S9
The sequence of the charging terminal of state is successively judged for updated m value, including the following contents:
If when the power module number that updated m value > charging terminal occupies, by power module shape occupied by the charging terminal
State mark is " free time " state, updates M value, and execute S6；
If being not processed when the power module number that the updated m value≤charging terminal occupies.
6. charging device of electric automobile according to claim 1,2,4 or 5, which is characterized in that the charging reator body
Including P group power module, L power control module, the input terminal of the power control module respectively with several power supply moulds
The output end of block electrical connection, the power control module is electrically connected as the power output end of charging reator body with charging terminal
It connects, control of the power control module by micro-chip processor；The P is positive integer and P >=L.
7. charging device of electric automobile according to claim 6, which is characterized in that the power control module includes opening
Matrix is closed, the switch matrix includes P direct-flow input circuit, and each direct-flow input circuit is electrically connected with 1 group of power module
It connects；The switch matrix has 1 DC output circuit, output of the DC output circuit as power control module
End；Control of the switch matrix by micro-chip processor, Q direct-flow input circuit conducting of any selection, the Q be positive integer and
Q≤P。
8. charging device of electric automobile according to claim 7, which is characterized in that the charging terminal includes micro process
Device, touch screen, charging gun and direct current input interface, wherein
The direct current input interface is electrically connected as the input terminal of charging terminal with DC output circuit；
The charging gun is electrically connected with direct current input interface and control of the charging gun by microprocessor；
The touch screen is bi-directionally connected with microprocessor；
The microprocessor is connect with micro-chip processor signal, signal of the signal output end of microprocessor as charging terminal
Output end.
9. charging device of electric automobile according to claim 8, which is characterized in that the charging terminal further includes swiping the card
Device, the signal output end of the card reader are electrically connected with the first signal input part of microprocessor, and the card reader is used for
It deducts fees and authenticates.
10. charging device of electric automobile according to claim 8 or claim 9, which is characterized in that the charging terminal further includes
Insulation monitoring module, the signal output end of the insulation monitoring module and the second signal input terminal of microprocessor pass through photoelectricity
Coupling element carries out signal connection, and insulation monitoring module sentences the state of insulation inside charging terminal before being used for charge initiation
It is disconnected.
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