CN106712228A - Electric automobile charging pile control system - Google Patents

Electric automobile charging pile control system Download PDF

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Publication number
CN106712228A
CN106712228A CN201510790134.2A CN201510790134A CN106712228A CN 106712228 A CN106712228 A CN 106712228A CN 201510790134 A CN201510790134 A CN 201510790134A CN 106712228 A CN106712228 A CN 106712228A
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CN
China
Prior art keywords
resistance
control unit
micro
voltage
charging pile
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Pending
Application number
CN201510790134.2A
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Chinese (zh)
Inventor
池继富
吴爱云
李毅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Micro grid technology enli (Anhui) Co., Ltd.
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SHANGHAI KONG YUAN ELECTRONIC TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by SHANGHAI KONG YUAN ELECTRONIC TECHNOLOGY Co Ltd filed Critical SHANGHAI KONG YUAN ELECTRONIC TECHNOLOGY Co Ltd
Priority to CN201510790134.2A priority Critical patent/CN106712228A/en
Publication of CN106712228A publication Critical patent/CN106712228A/en
Pending legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies relating to charging of electric vehicles
    • Y02T90/16Information or communication technologies improving the operation of electric vehicles
    • Y02T90/167Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S30/00Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/12Remote or cooperative charging

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

The invention relates to an electric automobile charging pile control system and belongs to the electric automobile charging field. The electric automobile charging pile control system comprises a micro control unit used for realizing processing and control on the front-end field charging information and the data and realizing interaction and remote communication of a man-machine interface, a three-phase AC input protection unit used for outputting corresponding overvoltage, undervoltage and open-phase signals to the micro control unit according to conditions of an external power grid, a signal communication unit used for realizing data transmission between the micro control unit and the man-machine interface and a DC power supply and an automobile BMS power supply system, a switch signal detection unit used for outputting charging signals to a relay driving unit and the micro control unit, an output voltage detection unit used for feeding back parameters of an output voltage, and the relay driving unit used for controlling on and off of each relay of a charging pile. The electric automobile charging pile control system is advantaged in that simple operation is realized, and a charging process can be dynamically adjusted according to requirements of the power grid and an automobile storage battery.

Description

A kind of electric automobile charging pile control system
Technical field
The present invention relates to charging electric vehicle field, more particularly to a kind of electric automobile charging pile control system.
Background technology
With the cry more and more higher of change and the energy-saving and emission-reduction of human environment, the exploitation of green energy resource into The development topic of today's society, and as reduction greenhouse gas emission and mitigate the solution relied on crude oil import Certainly one of scheme, new-energy automobile will turn into the trend of the times of various countries' automobile industry development, wherein especially with electricity Electrical automobile receives the very big concern of countries in the world.
Electric automobile is a kind of cleaning, low-carbon type Green Vehicle, mainly using power accumulator as main Power supply.Existing power accumulator finite capacity, the electric automobile that in the market is used once charge after it is continuous Mileage generally 100km to 300km is sailed, is then needed more to renew fully charged pond and is fed.With people An urgent demand to quick charge, the use of high power DC charging pile is more and more universal.
Existing high power DC charging pile simple structure, unitary function, it is impossible to well in reply power network Emergent fluctuation, causes the automobile storage battery lost of life;Can not wanting automatically according to automobile storage battery The voltage that output meets is sought, it is necessary to manually adjust, its is not intelligent high, troublesome poeration.
The content of the invention
It is an object of the invention to regarding to the issue above, there is provided a kind of electric automobile charging pile control system, Its is simple to operate, and can dynamically adjust charging process according to the requirement of power network and automobile storage battery.
The object of the present invention is achieved like this:
A kind of electric automobile charging pile control system, it is characterised in that intersect including micro-control unit, three Stream input protection location, signal communication unit, switching signal detection unit, output voltage detection unit and Relay drive unit;
The micro-control unit, for realizing treatment and control to front end scene charge information and data, And interaction and the telecommunication of man-machine interface;
The three-phase alternating current is input into protection location, for realizing to the over-pressed, under-voltage of three-phase alternating current input and The detection of phase shortage, and to corresponding over-pressed, the under-voltage and default phase signal of micro-control unit output;
The signal communication unit, for realizing micro-control unit and man-machine interface, dc source and automobile Data transfer between BMS power-supply systems;
The switching signal detection unit, for the voltage change by detecting charging gun button, to relay Device driver element charges or power-off signal, and simultaneously to micro-control unit output charging gun, automobile cradle And the connection status signal between automobile BMS power-supply systems;
The output voltage detection unit, for realizing the detection to dc source output parameter and feeding back to Micro-control unit;
The relay drive unit, for the instruction according to micro-control unit and switching signal detection unit, The break-make of each relay in control charging pile.
Wherein, three-phase alternating current input protection location include over-voltage detection circuit, undervoltage detection circuit and Lack detection circuit;
The over-pressed detection voltage by three-phase alternating current be input into carry out voltage sample after, by sampled voltage with After the benchmark high pressure of setting is compared, to the corresponding over-pressed or non-over-pressed signal of micro-control unit output;
After with the benchmark low pressure of setting be compared sampled voltage by the undervoltage detection circuit, to microcontroller The corresponding under-voltage or non-under-voltage signal of unit output;
The lack detection circuit is electric by sampling after carrying out zero voltage sampling to three-phase alternating current input After pressure is compared with the reference voltage of the nonzero value of setting, to micro-control unit export corresponding phase shortage or Non- default phase signal.
Wherein, the signal communication unit includes two RS-232 buses and a CAN;Described two Bar RS-232 buses are respectively used to realize that the data between micro-control unit and man-machine interface and dc source are passed It is defeated;The CAN is used to realize the data transfer between micro-control unit and automobile BMS power-supply systems.
Wherein, the signal communication unit also include RS-485 buses, for realize micro-control unit with only Remote data transmission between console.
Wherein, the switching signal detection unit includes relay drive signal detection module and state-detection Module;
The relay drive signal detection module include resistance one, resistance two, resistance three, resistance four, Resistance five, resistance six, resistance seven, comparator one and triode;Pressed with charging gun one end of resistance one Button is connected, the in-phase input end of another termination comparator one of resistance one, the inverting input of comparator one + 12V power supplys are followed by through resistance two respectively and are grounded after resistance three, the output end of comparator one is respectively through electricity Resistance four is followed by one end of+12V power supplys and connecting resistance five, and the other end of resistance five connects the base stage of triode respectively It is grounded with after resistance six, the grounded emitter of triode, the colelctor electrode of triode is accessed after resistance seven Relay drive unit;
The state detection module include resistance eight, resistance nine, resistance ten, resistance 11, comparator two, Electric capacity and diode;Button connects after one end parallel connection of one end and resistance nine of resistance eight with charging gun, Another termination+12V power supplys of resistance eight, the in-phase input end of another termination comparator two of resistance nine, than Inverting input compared with device two is connected with its output end, the output end of comparator two also with one end of resistance ten Connection, the other end of resistance ten distinguishes one end, one end of electric capacity, the positive pole of diode of connecting resistance 11 And micro-control unit, the other end of resistance 11 and the other end of electric capacity be grounded, and the negative pole of diode connects + 5V power supplys.
Wherein, the man-machine interface is touch LCD screen.
Beneficial effects of the present invention are:
1) present invention has circuit protection function, once there is over-pressed, under-voltage and phase shortage etc. no in external electrical network During stable case, can stop charging immediately, to protect automobile storage battery.
2) there is the present invention output voltage to detect function, the parameter and automobile of the output voltage that will can be detected The parameter of battery is made comparisons, and then automatically adjusts output voltage, the automobile electric power storage for making it be charged with needs Pond matches, and realizes the purpose of dynamic adjustment charging process.
3) present invention is relative by inspection by detecting that the voltage change on charging gun button judges charged state The break-make for surveying charging gun button has preferably stability, with electromagnetism interference.
Brief description of the drawings
Fig. 1 is system block diagram of the invention.
Fig. 2 is the circuit diagram of breaker in middle detecting signal unit of the present invention.
Specific embodiment
With reference to specific embodiments and the drawings, the present invention is expanded on further.
As shown in figure 1, a kind of electric automobile charging pile control system, including micro-control unit 1, three-phase Exchange input protection location 2, signal communication unit 3, the detection of switching signal detection unit 4, output voltage Unit 5 and relay drive unit 6.
Wherein:
Micro-control unit 1, for realizing treatment and control to front end scene charge information and data, with And interaction and the telecommunication of man-machine interface.
Three-phase alternating current is input into protection location 2, for realizing over-pressed, the under-voltage and phase shortage to three-phase alternating current input Detection, and export corresponding over-pressed, under-voltage and default phase signal to micro-control unit 1.
Three-phase alternating current input protection location 2 specifically includes over-voltage detection circuit, undervoltage detection circuit and phase shortage Detection circuit.The over-pressed detection voltage will be sampled after carrying out voltage sample to three-phase alternating current input After voltage is compared with the benchmark high pressure of setting, corresponding over-pressed or non-mistake is exported to micro-control unit 1 Pressure signal.After with the benchmark low pressure of setting be compared the sampled voltage by the undervoltage detection circuit, Corresponding under-voltage or non-under-voltage signal is exported to micro-control unit 1.The lack detection circuit is by three After cross streams input carries out zero voltage sampling, sampled voltage is entered with the reference voltage of the nonzero value of setting After going relatively, corresponding phase shortage or non-default phase signal are exported to micro-control unit 1.
When three-phase alternating current is input into protection location 2 to the output overvoltage of micro-control unit 1, under-voltage and default phase signal In any one or two kinds when, micro-control unit 1 can send the instruction for stopping charging, in case damage car Battery.
Signal communication unit 3, for realizing micro-control unit 1 and man-machine interface, dc source and automobile Data transfer between BMS power-supply systems.
Signal communication unit 3 specifically includes two RS-232 buses, a CAN and a RS-485 Bus.Two RS-232 buses are respectively used to realize micro-control unit 1 and man-machine interface and direct current Data transfer between source, relates generally to receive the instruction of user input in man-machine interface, the direct current of acquisition The electrical parameter of power supply, the information in the electrical parameter and automobile BMS power-supply systems of the dc source for obtaining is passed Transport to display etc. in man-machine interface.The CAN is used to realize micro-control unit 1 with automobile BMS electricity Data transfer between origin system, is mainly used for reading the information in automobile BMS power-supply systems.It is described RS-485 buses are standby bus, are mainly used in realizing micro-control unit 1 and only long-range between console Data transfer.
Switching signal detection unit 4, for the voltage change by detecting charging gun button, drives to relay Moving cell 6 charges or power-off signal, and simultaneously to the output of micro-control unit 1 charging gun, automobile cradle And the connection status signal between automobile BMS power-supply system threes.
Switching signal detection unit 4 specifically includes relay drive signal detection module and state detection module.
As shown in Fig. 2 relay drive signal detection module includes the R1 of resistance one, the R2 of resistance two, resistance Three R3, the R4 of resistance four, the R5 of resistance five, the R6 of resistance six, the R7 of resistance seven, the U1 of comparator one and triode Q;One end of the R1 of resistance one and the button connects of charging gun, another U1 of termination comparator one of the R1 of resistance one In-phase input end, the inverting input of the U1 of comparator one respectively through the R2 of resistance two be followed by+12V power supplys and Be grounded after the R3 of resistance three, the output end of the U1 of comparator one respectively through the R4 of resistance four be followed by+12V power supplys and One end of the R5 of connecting resistance five, the other end of the R5 of resistance five connects the base stage of triode Q and through resistance six respectively It is grounded after R6, the grounded emitter of triode, the colelctor electrode of triode Q accesses relay after the R7 of resistance seven Device driver element 6.
In the present invention, when charging gun is connected with automobile cradle and presses the button on charging gun, represent It is now chargeable shape when charging gun, automobile cradle and automobile BMS power-supply systems three connection are completed State, the voltage at button on charging gun is 4V;Filled when charging gun is connected but does not press with automobile cradle During button on electric rifle, represent that charging gun and the connection of automobile cradle are completed, it is single not with automobile BMS electricity Origin system is communicated, now for can not charged state, the voltage at button on charging gun is 6V;Work as charging When rifle is hanging, the voltage at button on charging gun is 12V.
The characteristic of the charging gun according to used in the present invention, adjusts the resistance of the R2 of the resistance two and R3 of resistance three Value so that the voltage of the inverting input of the U1 of comparator one is controlled between 4-6V, being specifically here should Terminal voltage is 5V.Thus, when the voltage at the button on charging gun is 4V, you can during charged state, The output of the U1 of comparator one is 0V so that triode Q ends, and is exported to relay drive unit 6 and charged Signal.When voltage at the button on charging gun is 6V or 12V, be can not charged state, compare The U1 of device one is output as non-zero V so that triode Q is turned on, to the output power-off letter of relay drive unit 6 Number.
State detection module include the R8 of resistance eight, the R9 of resistance nine, the R10 of resistance ten, the R11 of resistance 11, The U2 of comparator two, electric capacity C and diode D;One end of the R8 of resistance eight and one end of the R9 of resistance nine are in parallel Afterwards with the button connects of charging gun, another termination+12V power supplys of the R8 of resistance eight, the R9's of resistance nine is another The in-phase input end of termination comparator two U2, the inverting input of the U2 of comparator two is connected with its output end, The one end of the output end of the U2 of comparator two also with the R10 of resistance ten is connected, the other end difference of the R10 of resistance ten One end of the R11 of connecting resistance 11, one end of electric capacity C, the positive pole of diode D and micro-control unit 1, electricity The other end of the other end and electric capacity C that hinder 11 R11 is grounded, and the negative pole of diode D connects+5V power supplys.
In state detection module, the voltage at button on charging gun ibid, respectively 4V, 6V or 12V, Charging gun, automobile cradle and automobile BMS power-supply system three's attached states, only charging gun are represented respectively With both automobile cradles attached state, and charging gun vacant state, according to these three for detecting not Same voltage, the output end of the U2 of comparator two can export corresponding with these three states to micro-control unit 1 Different magnitudes of voltage so that micro-control unit 1 may determine that charging gun, automobile cradle and automobile Connection status between BMS power-supply system threes.
Output voltage detection unit 5, for realizing the detection to dc source output parameter and feeding back to micro-control Unit processed 1.Micro-control unit 1 can the dc source output parameter that will receive with from automobile BMS power supplys system The parameter of the automobile storage battery obtained in system compares, if error exceedes preset value, is sent out to dc source Go out corresponding adjust instruction, the parameter of automobile storage battery is met with the output for ensureing dc source, realize dynamic State adjusts the purpose of charging process.
Relay drive unit 6, for the instruction according to micro-control unit 1 and switching signal detection unit 4, The break-make of each relay in control charging pile.
User input instruction for convenience, the man-machine interface in the present invention specifically uses touch LCD screen.

Claims (6)

1. a kind of electric automobile charging pile control system, it is characterised in that including micro-control unit (1), Three-phase alternating current be input into protection location (2), signal communication unit (3), switching signal detection unit (4), Output voltage detection unit (5) and relay drive unit (6);
The micro-control unit (1), for realizing treatment and control to front end scene charge information and data System, and man-machine interface interaction and telecommunication;
The three-phase alternating current is input into protection location (2), for realizing to the over-pressed, deficient of three-phase alternating current input The detection of pressure and phase shortage, and to corresponding over-pressed, the under-voltage and default phase signal of micro-control unit (1) output;
The signal communication unit (3), for realizing micro-control unit (1) and man-machine interface, direct current Data transfer between source and automobile BMS power-supply systems;
The switching signal detection unit (4), for the voltage change by detecting charging gun button, to Relay drive unit (6) charges or power-off signal, and simultaneously to micro-control unit (1) output charging Connection status signal between rifle, automobile cradle and automobile BMS power-supply system threes;
The output voltage detection unit (5), it is simultaneously anti-to the detection of dc source output parameter for realizing It is fed to micro-control unit (1);
The relay drive unit (6), for single according to micro-control unit (1) and switching signal detection The instruction of first (4), the break-make of each relay in control charging pile.
2. a kind of electric automobile charging pile control system according to claim 1, it is characterised in that The three-phase alternating current is input into protection location (2) and is examined including over-voltage detection circuit, undervoltage detection circuit and phase shortage Slowdown monitoring circuit;
Wherein:
The over-pressed detection voltage by three-phase alternating current be input into carry out voltage sample after, by sampled voltage with After the benchmark high pressure of setting is compared, corresponding over-pressed or non-overvoltage letter is exported to micro-control unit (1) Number;
After with the benchmark low pressure of setting be compared the sampled voltage by the undervoltage detection circuit, Xiang Wei The corresponding under-voltage or non-under-voltage signal of control unit (1) output;
The lack detection circuit is electric by sampling after carrying out zero voltage sampling to three-phase alternating current input After pressure is compared with the reference voltage of the nonzero value of setting, lack to micro-control unit (1) output is corresponding Phase or non-default phase signal.
3. a kind of electric automobile charging pile control system according to claim 1, it is characterised in that The signal communication unit (3) includes two RS-232 buses and a CAN;Two RS-232 Bus is respectively used to realize data transfer of the micro-control unit (1) and man-machine interface and dc source between; The CAN is used to realize the data transfer between micro-control unit (1) and automobile BMS power-supply systems.
4. a kind of electric automobile charging pile control system according to claim 3, it is characterised in that The signal communication unit (3) also include RS-485 buses, for realize micro-control unit (1) with only Remote data transmission between console.
5. a kind of electric automobile charging pile control system according to claim 1, it is characterised in that The switching signal detection unit (4) includes relay drive signal detection module and state detection module;
The relay drive signal detection module includes resistance one (R1), resistance two (R2), resistance three (R3), resistance four (R4), resistance five (R5), resistance six (R6), resistance seven (R7), comparator one And triode (Q) (U1);One end of resistance one (R1) and the button connects of charging gun, resistance one (R1) Another termination comparator one (U1) in-phase input end, the inverting input of comparator one (U1) point + 12V power supplys are not followed by through resistance two (R2) and are grounded after resistance three (R3), comparator one (U1) Output end one end of+12V power supplys and connecting resistance five (R5), resistance are followed by through resistance four (R4) respectively The other end of five (R5) connects the base stage of triode (Q) and is grounded after resistance six (R6), three-level respectively The grounded emitter of pipe, the colelctor electrode of triode (Q) accesses relay driving list after resistance seven (R7) First (6);
The state detection module includes resistance eight (R8), resistance nine (R9), resistance ten (R10), electricity Hinder 11 (R11), comparator two (U2), electric capacity (C) and diode (D);Resistance eight (R8) Button connects with charging gun after one end parallel connection of one end and resistance nine (R9), resistance eight (R8) it is another One termination+12V power supplys, the in-phase input end of another termination comparator two (U2) of resistance nine (R9), The inverting input of comparator two (U2) is connected with its output end, and the output end of comparator two (U2) is also One end with resistance ten (R10) is connected, and the other end of resistance ten (R10) distinguishes connecting resistance 11 (R11) One end, one end of electric capacity (C), the positive pole of diode (D) and micro-control unit (1), resistance ten The other end of one (R11) and the other end of electric capacity (C) are grounded, and the negative pole of diode (D) meets+5V Power supply.
6. a kind of electric automobile charging pile control system according to claim 1, it is characterised in that The man-machine interface is touch LCD screen.
CN201510790134.2A 2015-11-17 2015-11-17 Electric automobile charging pile control system Pending CN106712228A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (6)

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CN108923379A (en) * 2018-09-28 2018-11-30 广东绿网新能源科技有限公司 Overcurrent and phase shortage the broken string TT&C system of electric car charging circuit
CN109274155A (en) * 2018-11-15 2019-01-25 国家电网有限公司 Wireless private network charging pile control system based on 1.8G frequency range
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CN113665387A (en) * 2021-08-27 2021-11-19 广东川琪科技有限公司 Intelligent charging equipment and control method thereof
RU227308U1 (en) * 2023-12-22 2024-07-16 ОБЩЕСТВО С ОГРАНИЧЕННОЙ ОТВЕТСТВЕННОСТЬЮ "Нефтяная электронная компания" Electric vehicle charging station control unit

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Cited By (8)

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Publication number Priority date Publication date Assignee Title
CN108923379A (en) * 2018-09-28 2018-11-30 广东绿网新能源科技有限公司 Overcurrent and phase shortage the broken string TT&C system of electric car charging circuit
CN108923379B (en) * 2018-09-28 2024-03-22 广东绿网新能源科技有限公司 Overcurrent and open-phase line breakage measurement and control system of electric automobile charging line
CN109274155A (en) * 2018-11-15 2019-01-25 国家电网有限公司 Wireless private network charging pile control system based on 1.8G frequency range
CN109471046A (en) * 2018-11-21 2019-03-15 珠海伊能电子科技有限公司 Power supply monitoring warning device and system
CN113525131A (en) * 2020-04-16 2021-10-22 深圳市鸿嘉利新能源有限公司 Eight rifle electric automobile direct currents of components of a whole that can function independently fill electric pile and cross undervoltage protection system
CN113665387A (en) * 2021-08-27 2021-11-19 广东川琪科技有限公司 Intelligent charging equipment and control method thereof
CN113665387B (en) * 2021-08-27 2023-10-13 广东川琪科技有限公司 Intelligent charging equipment and control method thereof
RU227308U1 (en) * 2023-12-22 2024-07-16 ОБЩЕСТВО С ОГРАНИЧЕННОЙ ОТВЕТСТВЕННОСТЬЮ "Нефтяная электронная компания" Electric vehicle charging station control unit

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