CN107867199A - A kind of charging pile intelligent distribution system - Google Patents
A kind of charging pile intelligent distribution system Download PDFInfo
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- CN107867199A CN107867199A CN201711106356.3A CN201711106356A CN107867199A CN 107867199 A CN107867199 A CN 107867199A CN 201711106356 A CN201711106356 A CN 201711106356A CN 107867199 A CN107867199 A CN 107867199A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for 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
- 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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- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of charging pile intelligent distribution system, including some charge power supplies and some charging piles, also include Intelligent power distribution device and host computer, Intelligent distributor device and host computer two-way communication link, host computer can issue data to charge power supply and charging pile respectively；Intelligent power distribution device includes on-off circuit and control circuit；The current input terminal of each charging pile can access the current output terminal of each charge power supply by on-off circuit；The distribution program that switch controlling signal is produced according to power state signal and charging pile status signal is configured with controller；Switch driving circuit is connected between on-off circuit and the signal output part of controller, switch driving circuit can be according to the break-make of switch controlling signal controlling switch circuit.Charging pile can not share the technical problem of charge power supply in the prior art for present invention solution, can realize the charge requirement for meeting multiple charging piles with the charge power supply compared with low capacity, lower the construction cost of charging pile.
Description
Technical field
The invention belongs to charging pile technical field, in particular for carrying out the charging pile intelligent power distribution system of distribution to charging pile
System.
Background technology
Electric automobile using electric energy due to that, as the energy, can solve the energy increasingly depleted that orthodox car has to face
The problem of, and can realizes that no pollution discharges, and meets the needs of environmental protection.Nowadays, it is each to have become the world for Development of EV
The common recognition of state, and be also a state basic policy in China, but due to the security by lithium battery, distance travelled is shorter, lithium battery
Hold at high price and the restriction of the charging factor such as auxiliary facility imperfection of electric automobile, the process of the popularization of electric automobile
Slowly.
The construction of charging pile is both to restrict the bottleneck of Development of Electric Vehicles, and the development of electric automobile also governs charging pile
Build.Current present situation is：Although the quantity of charging pile has not arrived plan, due to electric automobile popularity too
Low, the actual demand of the quantity of charging pile far super electric automobile, most of charging piles in community are only an ornament, are made
Into the great wasting of resources.And the input of charging pile construction, mainly in charge power supply, at present, a charging pile just needs to match somebody with somebody
A single charge power supply is put, because charging pile phenomenon of leaving unused is notable, thus causes the unnecessary wasting of resources.Separately
Outside, current charging pile there is problems：It is weaker that charging pile adapts to battery charging requirement ability, it is impossible to adapts to fast charge and slow
The requirement filled；Charging process charging modes do not change, it is impossible to meet the requirement of optimum charging curve of battery, be unsatisfactory for quickly filling
Electricity and prevent battery overcharge from causing battery life too short.
The content of the invention
For above-mentioned the deficiencies in the prior art, the present invention provides a kind of charging pile intelligent distribution system, solves prior art
Middle charging pile can not share the technical problem of charge power supply, can realize and meet multiple charging piles with the charge power supply compared with low capacity
Charge requirement, reduce the construction cost of charging pile；Charging process can be controlled according to the real-time status of battery, extended
The service life of battery.
In order to solve the above technical problems, technical scheme is as follows：A kind of charging pile intelligent distribution system, its feature
It is：Including some charge power supplies and some charging piles, in addition to Intelligent power distribution device and host computer, Intelligent distributor dress
Data can be issued to charge power supply and charging pile respectively with host computer two-way communication link, host computer by putting；Intelligent power distribution fills
Put including on-off circuit and control circuit；The current input terminal of each charging pile can access each fill by on-off circuit
The current output terminal of power supply；The control circuit includes controller, leads between charge power supply and the signal input part of controller
The connection of power state detection circuit is crossed, is connected between charging pile and the signal input part of controller by charging pile state detection circuit
Connect；The distribution journey that switch controlling signal is produced according to power state signal and charging pile status signal is configured with controller
Sequence；It is connected with switch driving circuit between on-off circuit and the signal output part of controller, switch driving circuit can be according to opening
Close the break-make of control signal controlling switch circuit.
Preferably, the on-off circuit includes power switch circuit and switching circuit of power supply；The power switch circuit
It is used to access to inductive charging with the one-to-one power switch of charge power supply, the current input terminal of each power switch including some
The current output terminal of power supply, the current output terminal of each power switch are joined together to form the first common port；The power supply is opened
Powered-down road includes some and one-to-one power switch of charging pile, and the current output terminal of each power switch is used to access correspondingly
The current input terminal connection of charging pile, the current input terminal of each power switch are joined together to form the second common port；Power supply
First common port of on-off circuit is connected with the second common port of switching circuit of power supply.
Preferably, switch driving circuit includes power switch drive circuit and power switch drive circuit；Each power supply
Switch is respectively connected with corresponding power switch drive circuit, and each power switch is respectively connected with corresponding power switch driving electricity
Road；The distribution program can produce power switch input letter respectively according to power state signal and charging pile status signal
Number, power switch input signal.
Preferably, controller performs distribution program according to the following steps：
Step 1：According to the input signal of charging pile state detection circuit, judge whether charging pile needs to charge, if so, then obtaining
The address of charging pile charged is needed, subsequently into step 2；If it is not, then opened to power supply corresponding to the charging pile that need not be charged
Close drive circuit and send the control signal for disconnecting power switch, into step 3；
Step 2：According to the input signal of power state detection circuit, judge whether power supply is idle；If so, then obtain idle power supply
Address, and send power supply input signal to corresponding power switch drive circuit, while the charging pile correspondence to charge to needs
Power switch drive circuit send power switch input signal；If it is not, power supply is opened corresponding to the charging pile then to be charged to needs
Close drive circuit and send the control signal for disconnecting power switch, into step 3；
Step 3：Wait the input signal of charging pile state detection circuit.
Preferably, when having multiple charging piles while needs are charged, controller is before step 1 is performed first with elder generation
Enter the charging pile address that first dequeue charges to needs to be ranked up；Then step 1 is performed successively according to charging pile address sort
To the distribution program of step 2.
Preferably, charging pile state detection circuit includes linked switch and the first multichannel being connected with the socket of charging pile
Selector；After the plug of electric automobile inserts charging pile socket, the first MUX will insert signal and the charging pile
Address is sent to controller；When electric automobile plug extract charging pile socket after, the first MUX will extract signal with
And the charging pile address is sent to controller；Controller judges that charging pile needs to charge according to insertion signal, according to extraction signal
Judge that charging pile need not charge.
Preferably, in addition to the second MUX, the signal input part of the second MUX and charging pile socket
Signal output part connects, so as to obtain the battery parameter of rechargeable battery, including battery size, initial current, initial voltage and
Rated voltage；Second MUX is provided with the wireless communication module to be communicated with host computer, and the second MUX passes through
Battery parameter is uploaded to host computer by wireless communication module；Charging pile state detection circuit also includes being used to gather battery in real time
Current sampling circuit, voltage sample circuit and the A/D modular converters of electric energy parameter；Current sampling circuit and voltage sampling electricity
Electric current, the voltage signal of road collection are sent to controller after A/D modular converters are converted to data signal；Controller will include real
When voltage electric energy parameter be uploaded to host computer.
Preferably, charging process control program is configured with the host computer, and is performed according to the following steps：
Step 801：Host computer obtain the battery parameter that collects of the second MUX, including battery size, initial current with
And initial voltage；
Step 802：It is that battery selects charge mode according to battery parameter：When initial voltage is less than 30V, trickle charge mould is selected
Formula；When initial voltage is more than or equal to 30V, constant current charging mode is selected；Selected charge mode is handed down to charge power supply, made
Charge power supply output current can be controlled according to charge mode by obtaining charge power supply；
Step 803：Host computer obtains obtains the real-time voltage that collects of charging pile state detection circuit in real time, when real-time voltage with
When the difference of rated voltage is less than 5V, constant-voltage charge pattern is selected；Selected charge mode is handed down to charge power supply so that fill
Power supply can control charge power supply output current according to charge mode.
Preferably, charging pile is provided with display panel and voice cue module, and display panel is used to show in charging process
The electric energy parameter of battery；The power supply shape comprising charge power supply electric current, voltage that controller arrives power state detection electric circuit inspection
State signal is uploaded to host computer, and host computer goes out to charge the stand-by period according to power state signal and battery parameter signal of change,
And charging pile is sent to, charging pile sends the voice message of charging stand-by period using voice cue module.
Preferably, the signal output part of the controller is connected with address decoder, the output end connection of address decoder
There is latch；R, D of latch terminate the output end into linked switch, the CLK ends of latch and the output end of address decoder
Connection, the S ends of latch are connected with power switch drive circuit；After the plug of electric automobile inserts charging pile socket, control
The charging pile address is sent to address decoder by device, and address decoder is sent to latch after charging pile address is decoded, together
When, linked switch exports high level and sends power switch input signal to power switch drive circuit to latch, latch；When
After the plug of electric automobile extracts charging pile socket, linked switch exports low level to latch, latch reset.
Compared with prior art, the invention has the advantages that：
1st, charging pile intelligent distribution system of the invention can come according to the power supply status of charge power supply and the state of charging pile
For charging pile reasonable distribution charge power supply, traditional charging pile and the man-to-man pattern of charge power supply are breached, realizes charging
Sharing for power supply, can meet the charge requirement of more charging piles with less charge power supply.
2nd, switching circuit structure causes each power supply to can act as the power supply of each charging pile, to realize charging pile
Distribution is shared power supply and provided the foundation.Control circuit can judge power supply by the power state signal of power state detection circuit
Whether it is idle condition, judges whether charging pile needs to charge by the charging pile status signal of charging pile state detection circuit,
Then controller configures idle power supply according to distribution program for the charging pile that needs charge.
3rd, the charging pile that charging pile intelligent distribution system pair of the invention needs to charge simultaneously is ranked, according to charging electricity
The order of charging pile is successively inserted in pond, is followed successively by charging pile power supply, is on the one hand maintained charging order, is on the other hand avoided same
When for the demand of the increasing power supply capacity brought by charging pile power supply, realize and the shared need of power supply met with power supply with small capacity
Ask, by the low cost for needing to install Large Copacity power supply, so more conform to that current charging pile utilization rate is low, and installation cost is high
Actual conditions, accord with the demands of the market.
4th, charging pile address is cached by latch, avoids controller from occurring when sending address and control signal chaotic, and
And realizing the time-sharing multiplex of data and address bus, i.e., data are transmitted with same bus transmits address again.
5th, power distribution equipment of the invention can obtain battery parameter, and premise bar is provided for the host computer calculating charging interval
Part.
6th, charging pile intelligent distribution system of the invention has the function that waiting time is reminded, electric energy parameter is shown, makes to fill
Electric process more hommization.
Brief description of the drawings
Fig. 1 is the structure principle chart of charging pile intelligent distribution system；
Fig. 2 is the theory diagram of control circuit in charging pile Intelligent power distribution device；
Fig. 3 is the structural representation of on-off circuit in charging pile Intelligent power distribution device in present embodiment；
Fig. 4 is the connection diagram of charge power supply state detection circuit and power driving circuit；
Fig. 5 is the structural representation of controller；
Fig. 6 is the structural representation of A/D modular converters；
Fig. 7 is the connection diagram of charging pile state detection circuit and power switch drive circuit；
Fig. 8 is the structural representation of the first MUX and the second MUX；
Fig. 9 is the structural representation of address decoder；
Figure 10 is the structural representation of latch.
Embodiment
As shown in figure 1, a kind of charging pile intelligent distribution system, including some charge power supplies and some charging piles, also wrap
Include Intelligent power distribution device and host computer, Intelligent distributor device and host computer two-way communication link, host computer can respectively to
Charge power supply and charging pile issue data；Intelligent power distribution device includes on-off circuit and control circuit；Each charging pile
Current input terminal the current output terminal of each charge power supply can be accessed by on-off circuit；The control circuit includes control
Connected between the signal input part of device, charge power supply and controller by power state detection circuit, charging pile and controller
Connected between signal input part by charging pile state detection circuit；It is configured with according to power state signal and fills in controller
Electric stake status signal produces the distribution program of switch controlling signal；Connected between on-off circuit and the signal output part of controller
There is switch driving circuit, switch driving circuit can be according to the break-make of switch controlling signal controlling switch circuit.
As shown in Fig. 2 in present embodiment, the on-off circuit includes power switch circuit and power switch electricity
Road；The power switch circuit includes some defeated with the one-to-one power switch of charge power supply, the electric current of each power switch
Enter the current output terminal that end is used to access corresponding charge power supply, the current output terminal of each power switch is joined together to form the
One common port；The switching circuit of power supply includes some and one-to-one power switch of charging pile, the electricity of each power switch
Stream output end is used for the current input terminal for accessing corresponding charging pile, and the current input terminal of each power switch is joined together to form
Second common port；First common port of power switch circuit is connected with the second common port of switching circuit of power supply；Control circuit bag
Include controller；The signal input part of controller is connected to power state detection circuit and charging pile state detection circuit；
The signal output part of controller is connected to power switch drive circuit and power switch drive circuit；Each power switch
Power switch drive circuit corresponding to being respectively connected with, each power switch are respectively connected with corresponding power switch drive circuit；Control
It is configured with what is be opened and closed according to power state signal and charging pile status signal control power switch and power switch in device processed
Distribution program.In present embodiment, the number of the charge power supply is two, and power switch is two；Power switch has
16, as shown in figure 3, power switch JCQ17, JCQ18, power switch JCQ1 to JCQ16.It can be filled according to increase is actually needed
The number of power supply and the number of charging pile, only need on the basis of the present embodiment power switch corresponding to increase,
Power switch and corresponding power switch drive circuit, power switch drive circuit.
Switching circuit structure causes each power supply to can act as the power supply of each charging pile, to realize that charging pile is matched somebody with somebody
The shared power supply of electricity provides the foundation.Control circuit can judge that power supply is by the power state signal of power state detection circuit
No is idle condition, judges whether charging pile needs to charge by the charging pile status signal of charging pile state detection circuit, so
Controller configures idle power supply according to distribution program for the charging pile that needs charge afterwards.
In present embodiment, controller performs distribution program according to the following steps：
Step 1：According to the input signal of charging pile state detection circuit, judge whether charging pile needs to charge, if so, then obtaining
The address of charging pile charged is needed, subsequently into step 2；If it is not, then opened to power supply corresponding to the charging pile that need not be charged
Close drive circuit and send the control signal for disconnecting power switch, into step 3；
Step 2：According to the input signal of power state detection circuit, judge whether power supply is idle；If so, then obtain idle power supply
Address, and send power supply input signal to corresponding power switch drive circuit, while the charging pile correspondence to charge to needs
Power switch drive circuit send power switch input signal；If it is not, power supply is opened corresponding to the charging pile then to be charged to needs
Close drive circuit and send the control signal for disconnecting power switch, into step 3；
Step 3：Wait the input signal of charging pile state detection circuit.
When having multiple charging piles while needs are charged, controller is before step 1 is performed first with FIFO
The charging pile address that queue is charged to needs is ranked up；Then step 1 is performed successively according to charging pile address sort arrive step 3
Distribution program.
As shown in Figure 4：In present embodiment, charge power supply state detection circuit includes current sampling circuit, voltage
The electric current of sample circuit and A/D modular converter U5, current sampling circuit and voltage sample circuit collection, voltage signal is through A/
D modular converters U5 is sent to controller U1 after being converted to data signal.Controller U1 believes according to the electric current for being converted to data signal
Number and voltage signal, whether just can judge charge power supply just in output current, if charge power supply does not have output current, represent
Charge power supply is idle condition.
Each charge power supply has corresponding charge power supply state detection circuit, is shown in Fig. 4 with two-way charging electricity
The situation of source state detection circuit, first via charge power supply include Hall element U7, Hall element U7 3 pin（I1）It is connected to）
A/D modular converters U5 26 pin（Output current sampled signal）, Hall element U7 1 pin（VCC）It is connected to A/D modular converters U5
27 pin,（Output voltage sampled signal V1）.Second tunnel charge power supply includes Hall element U8, Hall element U8 3 pin（I2）
It is connected to）A/D modular converters U5 28 pin（Output current sampled signal）, Hall element U8 1 pin（VCC）A/D is connected to turn
Block U5 1 pin is changed the mold,（Output voltage sampled signal V2）.
As shown in figs. 4 and 5, A/D modular converters U5 pin is described as follows：
1）A/D modular converters U5 has 8 tunnel analog signal inputs, uses wherein IN0-IN3；Sequentially input first via charge power supply
Voltage sampling signal, voltage, the current acquisition signal of current acquisition signal and the second tunnel charge power supply；
2）A/D modular converters U5 14,15 and 17~21 pin are 8 bit digital quantity output ends, are connected to controller U1 P2 mouths；
3）The 22 of A/D modular converters U5（ALE）Pin：Address latch allows signal, inputs, and high level is effective.Connect 5V power supplys；
4）Pin 6（START）：A/D changes starting impulse input, inputs a positive pulse（At least 100ns is wide）Make its startup
（Rising edge of a pulse makes 0809 reset, and trailing edge starts A/D conversions）；
5）Pin 7（EOC）：A/D conversion end signals, output, when A/D conversion ends, this end exports a high level（Turn
It is low level always during changing）, it is connected to controller U1 P3.6 ends；
6）Pin 9（OE）：Data output allows signal, inputs, and high level is effective.It is connected to controller U1 17 pin（P3.7 mouths）
When A/D conversion ends, this end inputs a high level, could open output triple gate, export digital quantity；
7）, pin 10（CLK）：Clock pulse input terminal；It is required that clock frequency is not higher than 640KHZ.It is connected to U1 14 pin.
As shown in Fig. 4 and Fig. 7：In present embodiment, described power switch RL6, RL8 are A.C. contactor；Power supply
The auxiliary reclay for triggering power switch RL6, RL8 is connected between drive circuit and power switch RL6, RL8
RL5、RL7.The charging pile power switch is A.C. contactor RL2, RL4；Power switch drive circuit and power switch RL2,
Auxiliary reclay RL1, RL3 for triggering power switch are connected between RL4.When being powered for charging pile, switch electricity
Road turns on, and the electric current passed through is larger, and power switch and power switch completely can ensure that high current is led to using A.C. contactor
Cross, make charging process normal operation, ensure safety.
Controller U1 circulations send AD conversion address, and control is AD converted to voltage sampling signal and current sampling signal
System, AD conversion output data store in the controller, judge the working condition of power supply.When power supply allows output, power supply is sent
Put into signal.Triode Q4, Q5 driver saturation work in two power driving circuits, moves auxiliary reclay RL5, RL7
Make, moving together contact connects A.C. contactor RL6, RL8D working power, control A.C. contactor RL6, RL8 action, and power supply connects
Connect bus.
As shown in Figure 7：In present embodiment, charging pile state detection circuit includes what is be connected with the socket of charging pile
Linked switch SW1（Linked switch corresponding with the first charging pile）、SW2（Linked switch corresponding with the second charging pile）And the
One MUX U2；When electric automobile plug insert charging pile socket after, the first MUX U2 will insert signal with
And the charging pile address is sent to controller U1；After the plug of electric automobile extracts charging pile socket, the first MUX
Signal will be extracted and the charging pile address is sent to controller U1；Controller U1 judges that charging pile needs to fill according to insertion signal
Electricity, judge that charging pile need not charge according to signal is extracted.In present embodiment, the socket of charging pile is inserted using nine holes
Seat, battery use nine kinds of needles plug.
Each charging pile state detection circuit is corresponding with a linked switch, corresponding 16 linkages in complete circuit
Switch, two linked switches SW1, SW2 are shown a case that in Fig. 7, SW1 rotation contacts are connected to the first MUX U2's
8 pin（The output state of charging pile 1 is whether nine kinds of needles plug inserts signal）；Linked switch SW2 rotates contact and is connected to the first multichannel
Selector U2 7 pin（The output state of charging pile 2 is whether nine kinds of needles plug inserts signal）.
Battery size test side（The communication pin of nine spring hole scokets 1）It is connected to the second MUX U3 8 pin（Receive battery
Status information）；Battery size test side（The communication pin of nine spring hole scokets 2）It is connected to the second MUX U3 7 pin（Receive electricity
Pond status information）.
When controller U1 judges that some charging pile needs charging（Such as charging pile 1）, controller U1 P0.0-P0.3 hairs
Go out the address code 0000 of the charging pile, in U1 P3.0 mouths（10 pin）Charging pile allow charging control signal set to 0, through allowing to fill
Electric address decoding circuitry corresponds to output end OPADD pulse（Low level pulse）, its rising edge makes latch U6：A puts high level
1（Charging pile puts into signal）, Q2 saturations, the RL1 actions of driving auxiliary reclay are controlled, moving together contact connects A.C. contactor RL2
Working power make its action, its moving together contact connect charging pile charge circuit.Charge power supply is through bus, electric current guiding obstruction two
One group in pole pipe .D3-D6（Two charge power supply voltage the higher person correspond to diode）, A.C. contactor RL2 moving together contact pair
Automobile batteries charges.
As shown in figure 8, in present embodiment, in addition to the second MUX U3, the second MUX U3's
Signal input part is connected with the signal output part of charging pile socket, so as to obtain the battery parameter of rechargeable battery, including cell type
Number, initial current, initial voltage and rated voltage；The second MUX U3 is provided with the channel radio to be communicated with host computer
Believe module, battery parameter is uploaded to host computer by the second MUX U3 by wireless communication module；Charging pile state-detection
Circuit also includes current sampling circuit, voltage sample circuit and the A/D moduluss of conversion for being used to gather the electric energy parameter of battery in real time
Block；Current sampling circuit and electric current, the voltage signal of voltage sample circuit collection are converted to data signal through A/D modular converters
After be sent to controller；Electric energy parameter comprising real-time voltage is uploaded to host computer by controller.
As shown in figure 8, the first MUX U2 and the second MUX U3 pin explanation：
1）First MUX U2 data input pin X0---X15 is sequentially connected 16 charging pile insert state collection switches,
That is linked switch SW1-SW16 cursor；
2）Second MUX U3 data input pin X0---X15 is sequentially connected the battery data of 16 9 hole plugs of charging pile
Output end；
3）First MUX U2 data output end（10 pin）It is connected to U1 P3.2 mouths（12 pin）Believe as control is interrupted
Number；
4）Second MUX U3 data output end（10 pin）It is connected to host computer and transmits battery information.
Nine spring hole scoket insert state are scanned, when some connection by controller U1 P1.4-P1.6 circulation output charging piles address
The first MUX U2 10 pin output low level, U1 perform interruption when dynamic switch is high level.Second multi-path choice simultaneously
Device U3 10 pin export battery information to host computer.
In present embodiment, two charge power supply states and the corresponding relation of charging pile charge requirement enter following table：
As can be known from the above table, using the charging pile intelligent distribution system of present embodiment, two charging piles can be met while filled
The demand of electricity, and charging station stake charging order can be lined up, on the one hand maintain and fill when two or more charging pile needs charging
Electric order, the demand for the increasing power supply capacity on the other hand avoiding while being brought for charging pile power supply, is realized with low capacity
Power supply meets the needs of power supply is shared, and reduces the cost for needing to install Large Copacity power supply, so more conforms to current charging pile
Utilization rate is low, the high actual conditions of installation cost, accords with the demands of the market.
In present embodiment, charging process control program is configured with the host computer, and perform according to the following steps：
Step 801：Host computer obtain the battery parameter that collects of the second MUX, including battery size, initial current with
And initial voltage；
Step 802：It is that battery selects charge mode according to battery parameter：When initial voltage is less than 30V, trickle charge mould is selected
Formula；When initial voltage is more than or equal to 30V, constant current charging mode is selected；Selected charge mode is handed down to charge power supply, made
Charge power supply output current can be controlled according to charge mode by obtaining charge power supply；
Step 803：Host computer obtains obtains the real-time voltage that collects of charging pile state detection circuit in real time, when real-time voltage with
When the difference of rated voltage is less than 5V, constant-voltage charge pattern is selected；Selected charge mode is handed down to charge power supply so that fill
Power supply can control charge power supply output current according to charge mode.
If battery electric quantity is very low when starting to charge up, then must be started to charge up with low current, i.e. trickle charge, if opened
Cell voltage is not low when beginning to charge（Such as more than 30V）Trickle charge process need not then be passed through.Low current charge is to protect
Battery is protected, avoids heavy current impact from bringing infringement to inside battery structure（Battery runs into high current meeting when voltage is very low
The injury being subject to is much higher when higher than voltage）.If cell voltage is not low, then can start large current charge, be exactly
Charged using the maximum current of permission, this is to save the charging interval, and it is exactly that can most save to be charged using maximum current
Time, be then exactly so-called constant-current charge, and with the progress of charging, cell voltage gradually rises.
Voltage is full of when cell voltage reaches or approached（Such as 34V or so）When, then to start to be transferred to constant-voltage charge, because reaching
Arrive and be full of voltage, at this moment can keeps voltage to be basically unchanged, and is gradually reduced charging current, is filled if not being transferred to low current
Electricity, it is possible to cause overtension, there is the danger overcharged, it is also to be harmful to battery to overcharge.The process of constant-voltage charge is actually
And it is not short, the electricity that this time is filled with probably is a quarter of total electricity or so.
In present embodiment, charging pile is provided with display panel and voice cue module, and display panel is used to show
Show the electric energy parameter of the battery in charging process；Controller arrives power state detection electric circuit inspection electric comprising charge power supply
Stream, the power state signal of voltage are uploaded to host computer, and host computer is according to power state signal and battery parameter signal of change
Go out to charge the stand-by period, and be sent to charging pile, the voice that charging pile sends the charging stand-by period using voice cue module carries
Show.
As shown in Fig. 6,7,9 and Figure 10：In present embodiment, the signal output part of the controller U1 is connected with ground
Location decoder U4, address decoder U4 output end are connected with latch；R, D of latch terminate the output into linked switch
End, the CLK ends of latch and the output end of address decoder are connected, and the S ends of latch are connected with power switch drive circuit, R
It is data input pin to hold as reset terminal, D ends, and CLK ends are time sequential pulse input, and S ends are to put 1 end；When the plug of electric automobile
After inserting charging pile socket, by the charging pile address, U4, address decoder U4 will fill controller U1 with being sent to address decoder
Latch is sent to after electric stake address decoding, meanwhile, linked switch exports high level and driven to latch, latch to power switch
Dynamic circuit sends power switch input signal；After the plug of electric automobile extracts charging pile socket, linked switch exports low electricity
Put down to latch, latch reset.Charging pile address is cached by latch, avoids controller U1 from sending address and control signal
Shi Fasheng is chaotic, and realizes the time-sharing multiplex of data and address bus, i.e., data are transmitted with same bus transmits ground again
Location.
In system work, nine kinds of needles plug is inserted without charging pile at the beginning, all charging pile state acquisitions switch is set to 0
Level, latch are set to 0.Charging pile input control is failure to actuate, and corresponding A.C. contactor is off.After controller U1 self-tests
Distribution program is performed, charge power supply voltage and current parameter is gathered and preserves data.If power supply is normal, U1 35-34 pin difference
Power supply input signal puts 1, latch unit is in preparation and puts 1 state；The drive circuit of power supply and electric quantity acquisition unit,
Auxiliary reclay and A.C. contactor action, switch on power to bus.Meanwhile information process unit performs scan round charging pile
State acquisition switching information program.I.e.：Controller U1 P1.4-P1.6 circulations send charging pile address, select corresponding charging pile
Status data output.
When there is automobile to need to charge, when inserting nine kinds of needles plug, corresponding charging pile state acquisition switch puts 1, makes corresponding latch
Device is in preparation and puts 1 state.
Controller U1 perform scan round to the charging pile state acquisition switch put 1 when, controller U1 performs interruption, preservation
Corresponding address, check power supply status data.When two charge power supplies are in battery charging state, broadcast is sent by host computer
Signal is waited, and inform the stand-by period to charging pile by broadcast and text notification user.Idle condition is in when there is power supply
When, controller U1 exports the charging pile address and then export charging pile in P0.0-P0.3 mouths allows control wave, triggering pair
Latch is answered to put 1, charging pile puts into the drive circuit of unit, auxiliary reclay and A.C. contactor action, connects charging pile and fills
Electrical circuit, realize the charging to automobile batteries.Controller U1 exits interruption, shielding work charging pile address, continues to fill to other
Electric stake state acquisition on off state scanning.
Automobile charging complete, nine kinds of needles plug is extracted, or by charging pile panel button, set to 0 linked switch, make corresponding lock
Storage is set to 0, and power switch drive circuit puts open circuit, auxiliary reclay and A.C. contactor dead electricity, disconnects charging pile charge circuit.
The power switch drive circuit of each charging pile is correspondingly provided with a latch, corresponding 16 in complete circuit
Individual latch, when exporting corresponding address pulse when controller U1 judges to power to certain charging pile, latch puts 1.Figure 10
In show duplex feeding switch driving circuit distinguish corresponding to latch U6A, U6B, latch U6A, U6B are drawn respectively
Pin illustrates：
On latch U6A
1）Latch U6A 3 pin connect 1 pin for allowing charging address decoder unit U4（First charging pile）, as latch
U6A clock.5 pin output charging pile input signal 1；
2）Latch U6A 1 pin connects the nine kinds of needles plug access switching signal of first charging pile, and charging pile nine kinds of needles plug is inserted as
High level 1, it is not inserted into as low level 0；1 pin is high level when charging pile needs to power, and waiting allows charging pulse to arrive.In arteries and veins
When punching adds 3 pin, the pin of latch 5 puts high level, output charging pile input signal 1.
On latch U6B
1) U6B 11 pin connect 2 pin for allowing charging address decoder unit U4（Second charging pile）, as latch U6B's
Clock.9 pin output charging pile input signal 2.
2）Latch U6B 13 pin connect the nine kinds of needles plug access switching signal of second charging pile, charging pile nine kinds of needles plug
High level 1 is inserted as, is not inserted into as low level 0；13 pin are high level when charging pile needs to power, and waiting allows charging pulse to arrive
Come.When pulse adds 11 pin, the pin of latch 9 puts high level, output charging pile input signal 2.
Address decoder U4 pin explanation：
1）Allow the bit address ends of address decoding U4 tetra- of charging（23-20 pin）Connect controller U1 P0.0-P0.3 mouths（39-36
Pin）.
2）Address decoder U4 16 output ends connect clock end, i.e. CLK ends corresponding to 16 latch；
3）Address decoder U4 2 Enable Pins E1, E2（18-19 pin）Parallel connection, connection controller U1 P3.0 mouths（10 pin）'s
Charging pile allows charging control signal.
Address decoder U4 is sent the ground of the charging pile when certain charging pile allows charging by controller U1 P0.0-P0.3
Location code, in U1 P3.0 mouths（10 pin）Charging pile allow charging control signal to control lower output pulse, corresponding latch is put 1
Latch.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to the technology of invention
Scheme is modified or equivalent substitution, and without departing from the objective and scope of technical solution of the present invention, it all should cover in this hair
Among bright right.
Claims (10)
- A kind of 1. charging pile intelligent distribution system, it is characterised in that：Including some charge power supplies and some charging piles, in addition to Intelligent power distribution device and host computer, Intelligent distributor device and host computer two-way communication link, host computer can be respectively to filling Power supply and charging pile issue data；Intelligent power distribution device includes on-off circuit and control circuit；Each charging pile Current input terminal can access the current output terminal of each charge power supply by on-off circuit；The control circuit includes control Connected between the signal input part of device, charge power supply and controller by power state detection circuit, charging pile and controller Connected between signal input part by charging pile state detection circuit；It is configured with according to power state signal and fills in controller Electric stake status signal produces the distribution program of switch controlling signal；It is connected between on-off circuit and the signal output part of controller Switch driving circuit, switch driving circuit can be according to the break-makes of switch controlling signal controlling switch circuit.
- 2. charging pile intelligent distribution system according to claim 1, it is characterised in that：The on-off circuit is opened including power supply Powered-down road and switching circuit of power supply；The power switch circuit includes some and one-to-one power switch of charge power supply, The current input terminal of each power switch is used for the current output terminal for accessing corresponding charge power supply, and the electric current of each power switch is defeated Go out end and be joined together to form the first common port；The switching circuit of power supply includes some powered correspondingly with charging pile and opened Close, the current output terminal of each power switch is used for the current input terminal connection for accessing corresponding charging pile, each power switch Current input terminal is joined together to form the second common port；First common port of power switch circuit and the of switching circuit of power supply Two common ports are connected.
- 3. charging pile intelligent distribution system according to claim 2, it is characterised in that：Switch driving circuit is opened including power supply Close drive circuit and power switch drive circuit；Each power switch is respectively connected with corresponding power switch drive circuit, often One power switch is respectively connected with corresponding power switch drive circuit；The distribution program can according to power state signal and Charging pile status signal produces power switch input signal, power switch input signal respectively.
- 4. charging pile intelligent distribution system according to claim 3, it is characterised in that：Controller performs according to the following steps matches somebody with somebody Electric program：Step 1：According to the input signal of charging pile state detection circuit, judge whether charging pile needs to charge, if so, then obtaining The address of charging pile charged is needed, subsequently into step 2；If it is not, then opened to power supply corresponding to the charging pile that need not be charged Close drive circuit and send the control signal for disconnecting power switch, into step 3；Step 2：According to the input signal of power state detection circuit, judge whether power supply is idle；If so, then obtain idle power supply Address, and send power supply input signal to corresponding power switch drive circuit, while the charging pile correspondence to charge to needs Power switch drive circuit send power switch input signal；If it is not, power supply is opened corresponding to the charging pile then to be charged to needs Close drive circuit and send the control signal for disconnecting power switch, into step 3；Step 3：Wait the input signal of charging pile state detection circuit.
- 5. charging pile intelligent distribution system according to claim 4, it is characterised in that：When having multiple charging piles while need When being charged, controller is carried out before step 1 is performed first with First Input First Output to the charging pile address that needs charge Sequence；Then step 1 is performed successively to the distribution program of step 3 according to charging pile address sort.
- 6. charging pile intelligent distribution system according to claim 1, it is characterised in that：Charging pile state detection circuit includes The linked switch and the first MUX being connected with the socket of charging pile；When the plug of electric automobile inserts charging pile socket Afterwards, the first MUX will insert signal and the charging pile address is sent to controller；When the plug of electric automobile is extracted After charging pile socket, the first MUX will extract signal and the charging pile address is sent to controller；Controller according to Insertion signal judges that charging pile needs to charge, and judges that charging pile need not charge according to signal is extracted.
- 7. charging pile intelligent distribution system according to claim 1, it is characterised in that：Also include the second MUX, The signal input part of second MUX is connected with the signal output part of charging pile socket, so as to obtain the battery of rechargeable battery Parameter, including battery size, initial current, initial voltage and rated voltage；Second MUX be provided with it is upper Battery parameter is uploaded to host computer by the wireless communication module of machine communication, the second MUX by wireless communication module；Fill The current sampling circuit of electric energy parameter, the voltage sample circuit that electric stake state detection circuit also includes being used for gathering battery in real time with And A/D modular converters；Current sampling circuit and the electric current of voltage sample circuit collection, voltage signal turn through A/D modular converters Controller is sent to after being changed to data signal；Electric energy parameter comprising real-time voltage is uploaded to host computer by controller.
- 8. charging pile intelligent distribution system according to claim 7, it is characterised in that：Charging is configured with the host computer Process control block (PCB), and perform according to the following steps：Step 801：Host computer obtain the battery parameter that collects of the second MUX, including battery size, initial current with And initial voltage；Step 802：It is that battery selects charge mode according to battery parameter：When initial voltage is less than 30V, trickle charge mould is selected Formula；When initial voltage is more than or equal to 30V, constant current charging mode is selected；Selected charge mode is handed down to charge power supply, made Charge power supply output current can be controlled according to charge mode by obtaining charge power supply；Step 803：Host computer obtains obtains the real-time voltage that collects of charging pile state detection circuit in real time, when real-time voltage with When the difference of rated voltage is less than 5V, constant-voltage charge pattern is selected；Selected charge mode is handed down to charge power supply so that fill Power supply can control charge power supply output current according to charge mode.
- 9. charging pile intelligent distribution system according to claim 7, it is characterised in that：Charging pile be provided with display panel with And voice cue module, display panel are used for the electric energy parameter for showing the battery in charging process；Controller examines power supply status What slowdown monitoring circuit detected is uploaded to host computer comprising charge power supply electric current, the power state signal of voltage, and host computer is according to power supply Status signal and battery parameter signal of change go out to charge the stand-by period, and are sent to charging pile, and charging pile utilizes voice message Module sends the voice message of charging stand-by period.
- 10. charging pile intelligent distribution system according to claim 1, it is characterised in that：The signal output of the controller End is connected with address decoder, and the output end of address decoder is connected with latch；R, D of latch are terminated into linked switch Output end, the CLK ends of latch and the output end of address decoder connect, and S ends and the power switch drive circuit of latch connect Connect；After the plug of electric automobile inserts charging pile socket, the charging pile address is sent to address decoder, address by controller Decoder will be sent to latch after the decoding of charging pile address, meanwhile, linked switch exports high level to latch, latch to Power switch drive circuit sends power switch input signal；After the plug of electric automobile extracts charging pile socket, linkage is opened Pass exports low level to latch, latch reset.
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| CN110022101A (en) * | 2019-04-04 | 2019-07-16 | 苏州国科视清医疗科技有限公司 | Plurality of stepping motors driving method, circuit and device based on FSMC |
| CN112124114A (en) * | 2020-09-07 | 2020-12-25 | 李广辉 | Intelligent power distribution system and method for charging pile |
| CN116118549A (en) * | 2023-04-04 | 2023-05-16 | 南京能瑞电力科技有限公司 | Method and device for determining guiding state of alternating-current charging pile and alternating-current charging pile |
| CN117445736A (en) * | 2023-12-25 | 2024-01-26 | 湖南湘电绿能智控有限公司 | Intelligent monitoring system of regional direct current car fills electric pile |
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| CN117445736A (en) * | 2023-12-25 | 2024-01-26 | 湖南湘电绿能智控有限公司 | Intelligent monitoring system of regional direct current car fills electric pile |
| CN117445736B (en) * | 2023-12-25 | 2024-03-22 | 湖南湘电绿能智控有限公司 | Intelligent monitoring system of regional direct current car fills electric pile |
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