CN206283291U - A kind of novel electric vehicle direct-current charging post control system - Google Patents

Abstract

The utility model is related to technical field of new energy, specifically related to a kind of novel electric vehicle direct-current charging post control system includes main control circuit, and can bus driving circuits, onboard system power-supplying circuit, card-punching system interface circuit, power conversion interface circuit, charging pile DC charging major loop on-off control circuit and the auditory tone cues electric circuit being connected with main control circuit respectively.The beneficial effects of the utility model are：The utility model is observed《Electric car conduction chargeable connection device part 1 General Requirement》GB/T20234.1 2011 and《Electric car conduction chargeable connection device third portion direct-current charging interface》The requirement of GB/T20234.2 2011, can be the charging electric vehicle of the compatible rechargeable standard.

Description

A kind of novel electric vehicle direct-current charging post control system

Technical field

The utility model is related to technical field of new energy, and in particular to a kind of novel electric vehicle direct-current charging post control System processed.

Background technology

In recent years, New-energy electric vehicle is because pollution-free, energy efficiency is high, simple structure, the low advantage of power cost As automobile industry circle new lover, its composition mainly includes the mechanical system such as driven by power and control system, driving force transmission, completes Equipment of assigned tasks etc..At present, motor wagon, electric motor coach and electronic special-purpose vehicle are being handed under national policy encouragement Bear the responsibility key player in logical transport.

Charging pile its fuel charger for being functionally similar to inside gas station, can be fixed on ground or wall, be installed on public In building (public building, market, Public Parking etc.) and residential area parking lot or charging station, can be according to different voltage Grade is the charging electric vehicle of various models.The input of charging pile is directly connected to AC network, and output end is equipped with filling Plug is used to be charging electric vehicle.

Charging pile is divided into alternating-current charging pile and direct-current charging post at present.Exchange stake output single-phase/three-phase alternating current passes through car Load charger is converted into direct current and supplies electricity to charging on-vehicle battery, and power is typically small (having 7kw, 22kw, 40kw constant power), and charge speed Degree is generally slower, therefore is typically mounted at the ground such as community parking field.Direct-current charging post (or off-board charger) is then directly defeated Go out direct current and supply electricity to on-vehicle battery to be charged, power is larger (having 60kw, 120kw, 200kw even more high), charging rate is very fast, Therefore it is typically mounted at the charging station by highway.However, direct-current charging post feasibility standard disunity in R＆D process, will The development of ev industry can be restricted.

Utility model content

The technical problems to be solved in the utility model is to provide a kind of novel electric vehicle direct-current charging post control system, It can be the charging electric vehicle of any compatible country's rechargeable standard.

The technical solution of the utility model is：A kind of novel electric vehicle direct-current charging post control system, including main control Circuit, and can bus driving circuits, onboard system power-supplying circuit, the card-punching system being connected with main control circuit respectively Interface circuit, power conversion interface circuit, charging pile DC charging major loop on-off control circuit and auditory tone cues electric circuit, it is described Can bus driving circuits and onboard system power-supplying circuit are filled by charging pile end charging socket connecting electric automobile end respectively Plug；Charging pile end charging socket is arranged on charging pile DC charging major loop, and it is laid with least nine contacts Point.

The main control circuit include MC9S12XEQ512 single chip circuits, and respectively with MC9S12XEQ512 single-chip microcomputers Circuit connected reset circuit, crystal oscillating circuit, download program interface circuit.

The can bus driving circuits use the CAN drive circuit of AD8138 chips.

The can bus driving circuits include the first resistor and second resistance, the differential amplification chip that are sequentially connected in series AD8138, the first electric capacity and the second electric capacity, 3rd resistor and the 4th resistance, AD8138 are also parallel with the 5th resistance and the 6th electricity Resistance.

The onboard system power-supplying circuit include circuit control relay, amplifying circuit and be connected on power supply lead back Contact switch on road.

The auditory tone cues electric circuit includes voice module, miCro_TF storage cards, industrial toy trumpet.

The industrial toy trumpet uses 2.5W loudspeaker.

Charging pile end charging socket includes at least nine contact points, and nine contact points are respectively：Positive contact Point, cathode contact point, ground protection contact point, CANH contact points, CANL contact points, offboard system connection confirm contact point, Onboard system connection confirms contact point, low pressure accessory power supply positive contact point, low pressure accessory power supply cathode contact point；Described nine Contact point contact point connection corresponding with electric automobile end charging plug.

A kind of novel electric vehicle direct-current charging post control system, also the charging electricity including being connected with main control circuit respectively Cable connection confirms circuit, serial ports screen interface circuit, electric energy reading circuit, LED indicating circuit and warning circuit, and the electric energy reads Circuit is also connected with the intelligent power metering device being arranged on charging pile DC charging major loop, and the charging cable connection is true Recognize circuit and be connected with the charging pile end charging socket being connected on charging pile DC charging major loop.

A kind of novel electric vehicle direct-current charging post control system also includes providing power supply for the charging pile control device System supplymentary power circuit.

Relative to prior art, the beneficial effects of the utility model are：

1）The utility model is observed《Electric car conduction chargeable connection device part 1 General Requirement》GB/ T20234.1-2011 and《Electric car conduction chargeable connection device third portion direct-current charging interface》GB/T20234.2- 2011 requirement, can be the charging electric vehicle of the compatible rechargeable standard；

2）The utility model employs modularized design scheme, and each circuit module function is separate in making device, can To be easily integrated among other charging equipment of electric automobile, the flexibility of the device hardware resource is improve, be easy to System maintenance and system upgrade；

3）The utility model employs Freescale for master controller, by the pulse width modulator module of its Embedded, Digital analog converter module, simplifies the complexity of circuit design, improves the convenience of automobile user charging；

4）The utility model realize electric automobile DC charging process connection confirm, identification electric car powering mode and Transmit the maximum current of mouth, charging connection state Real-time Collection, fault alarm, provide the user at voice service and emergency condition The functions such as reason.The security isolation design of the real-time monitoring and signal of charging process effectively increases the security of system, enhances The stability of system.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is schematic block circuit diagram of the present utility model.

Fig. 3 is the main control circuit based on Freescale single-chip microcomputer MC9S12XEQ512 of the present utility model.

Fig. 4 is that charging cable of the present utility model connection confirms circuit.

Fig. 5 is CAN drive circuit of the present utility model.

Fig. 6 is of the present utility model to vehicle-mounted BMS power-supplying circuits.

Fig. 7 is the serial ports screen interface circuit based on RS232 of the present utility model.

Fig. 8 is the electric energy reading circuit based on RS485 buses of the present utility model.

Fig. 9 is RGB three-color LEDs indicating circuit of the present utility model.

Figure 10 is voice module circuit of the present utility model.

Figure 11 is charging pile charging major loop on-off control circuit of the present utility model.

Figure 12 is system supplymentary power circuit of the present utility model.

Figure 13 is the utility model system supplymentary power sense circuit.

Specific embodiment

As shown in accompanying drawing 1 to accompanying drawing 13, the utility model provides a kind of novel electric vehicle direct-current charging post control system, It is master controller to use Freescale, by the pulse width modulator of its Embedded（pulse width modulation, PWM）Module, digital analog converter (analog to digital converter, ADC) module, simplify circuit design Complexity, improves the convenience of automobile user charging.

The system is main to be confirmed by the governor circuit based on Freescale single-chip microcomputer MC9S12XEQ512, charging cable connection Circuit, CAN drive circuit, onboard system power-supplying circuit, serial ports screen interface circuit, card-punching system interface circuit, work( Rate conversion interface circuit, electric energy reading circuit, LED indicating circuit, warning circuit, the control of charging pile DC charging major loop break-make The circuits such as circuit, sound circuit are constituted.

The utility model realizes the powering mode and biography that the connection of electric automobile DC charging process confirms, recognizes electric car The maximum current of outlet, charging connection state Real-time Collection, fault alarm, provide the user voice service and emergency condition treatment Etc. function.The security isolation design of the real-time monitoring of charging process and signal effectively increases the security of system, enhances and is The stability of system.

The utility model is realized using following scheme：

1. modularized design scheme

The control system uses modularized design scheme, is mainly made up of three parts：Direct current is input into control section, realizes The functions such as direct current supply control, the metering of electric energy, photovoltaic conversion, security protection.Direct current output control section, completes charging cable Connection confirms, control guiding communicates with Vehicular charger.Central control portion, realizes the work(such as system detectio, man-machine interaction Energy.Wherein, direct current input control section photovoltaic conversion part and direct current output control section constitute charging pile DC charging master and return Road.The utility model theory diagram is as shown in Figure 2.

As the control core of the system, the microprocessor of 16 bit produced using Freescale (Freescale) company MC9S12XEQ512, it is a in brand-new MC9S12 series low-power microprocessor that this processor is that Freescale company releases Product.Embedded have analog-digital converter (analog to digital converter, ADC), pulse width modulator ( Pulse width modulation, PWM) and universal synchronous/asynchronism transceiver (universal synchronous Asynchronous receiver and transmitter, USART) the peripheral hardware resource such as interface, it is very big by these resources Simplify the complexity of circuit design.

In the block diagram of system, RS485 interface circuits realize intelligent power metering module and processor Communication interface conversion between MC9S12XEQ512, completes to charging voltage, the reading of electric current；Charging pile DC charging major loop leads to Switching on and off for disconnected control circuit realiration D.C. contactor main contacts, realizes the control of DC charging electric energy；CAN drives Circuit is used to realize charging pile with vehicle-mounted BMS（Battery management system）Communication；Charging cable connection confirms (connection confirmation, CC) circuit is used to realize that the connection of direct-current charging post charging cable confirms function；Fill The label of electrical socket 1 to 9, represents nine contact points of socket, wherein, DC+ is positive contact point, DC- is cathode contact point, PE is Ground protection contact point, S+ are CANH contact points, S- is CANL contact points, CC1 is offboard system connection confirmation contact point, CC2 is onboard system connection confirmation contact point, A+ is low pressure accessory power supply positive contact point, A- is for low pressure accessory power supply negative pole connects Contact.

All of above each circuit module function is separate, can easily be integrated into other charging electric vehicles Among equipment, the flexibility of the device hardware resource is improve, be easy to system maintenance and system upgrade.

2. each functional module technical scheme of device

（1）Main control circuit based on Freescale single-chip microcomputer MC9S12XEQ512

The main control circuit based on Freescale single-chip microcomputer MC9S12XEQ512 is main by MC9S12XEQ512 monolithics Electromechanical road, reset circuit, crystal oscillating circuit, download program interface circuit composition.Crystal oscillator is 16MHz, I/O points of the main control circuit Interface case with and with other modules, as shown in Figure 3.

（2）Charging cable connection confirms circuit

Charging cable connection confirms circuit as shown in Figure 4, including+5V power supplys, first resistor RC4, the being sequentially connected in series Two resistance RC5, diode DC1,3rd resistor RC7, charging connection confirm port CC0, in the two ends parallel connection light of second resistance RC5 The input of electric coupler PC817, the output end connection main control circuit of photoelectrical coupler PC817；Charging connection confirms port CC0 confirms contact point CC connections with the connection of charging pile end charging socket.When charging pile end charging socket and electric automobile end are marked When quasi- charging plug completes connection, charging connection confirms port CC0 with equipment ground short circuit ,+5V power supplys, first resistor RC4, second Resistance RC5, diode DC1,3rd resistor RC7 and charging connection confirm that port CC0, equipment ground constitute loop, photoelectric coupling Device PC817 works, and charging cable connection confirms circuit output end（That is the output end of photoelectrical coupler PC817）It is at MCU_CC1 Low level, charging cable connection confirms that circuit output end MCU_CC1 is connected with 56 pins of single-chip microcomputer in Fig. 3.Work as charging pile When end charging socket is not connected with electric automobile end charging plug, charging cable connection confirms circuit output end MCU_CC1 It is high level.Therefore, single-chip microcomputer only needs to detect that charging cable connection confirms level state at circuit output end MCU_CC1 just Can determine whether whether power supply plug is connected intact with power supply base.Charging connection confirms that port detection line is connected by terminals JPC1 Connection to charging pile end charging socket confirms contact point CC.

（3）CAN drive circuit

The system is communicated using industrial CAN bus circuit with vehicle-mounted BMS, realizes that electricity, on-vehicle battery model etc. are believed substantially The reading of breath.This level shifting circuit completes two-way level conversion by the CAN interface circuit using AD8138 chips.CAN Drive circuit, as shown in Figure 5, including the first resistor R1 that is sequentially connected in series and second resistance R2, differential amplification chip AD8138, First electric capacity C1 and the second electric capacity C2,3rd resistor R7 and the 4th resistance R8, AD8138 are also parallel with the 5th resistance R5 and the 6th Resistance R6, output end is parallel with including the voltage clamping circuit including R10, R9, the VR1 of regulation output voltage, limitation output electricity Pressure, also promising AD8138 provides voltage and enables R3, R4, C3, C4 of current potential.Signal_in+, signal_in- of the circuit Be connected with MC9S12XEQ512 single-chip microcomputers 63,64 pins respectively, signal_out+, signal_out- respectively with charging socket S +, S- is connected.

（4）To vehicle-mounted BMS power-supplying circuits

As shown in Figure 6, power-supplying circuit includes the relay KA1 of circuit control, amplifying circuit and is connected on power supply Contact switch KB on major loop.Relay KA1's realizes the control to BMS power supply circuits by controlling contact KB.The circuit It is controlled by the 73rd pin of MC9S12XEQ512 single-chip microcomputers, the pin and the input to vehicle-mounted BMS power-supplying circuits RELAY_PK0 is connected.As long as the 73rd pin output low level of MC9S12XEQ512 single-chip microcomputers, in resistance RA3, RA4 and PNP tri- Under the driving of the amplifying circuit that pole pipe QA1 is constituted, relay KA1 is powered, causes the contact KB on main circuit power supply to close, power supply Circuit output electric energy；When the 73rd pin of MC9S12XEQ512 single-chip microcomputers exports high level, then can make the power supply electricity for exporting Road cuts off.

（5）Serial ports screen interface circuit based on RS232

The system, as human-computer interaction interface, completes touchscreen keypad input, Pop-up using industrial serial ports LCD display module Touch screen interaction mode and icon, characters in a fancy style and the curve such as menu, increment regulation display.Serial ports screen interface circuit is used RS232 interface circuits are connected with industrial serial ports LCD display module.The display module communication serial port is RS232 level, it is necessary to complete Level conversion, could be with MC9S12XEQ512 microcomputer series interface communications, and this level shifting circuit is by using MAX232 chips RS232 interface circuits are completed, and circuit is as shown in Figure 7.MAX232 chips can complete two-way level conversion, be coupled with conversion terminal JPE1 and JPE2, is connected by standard connecting line by the two binding posts with industry serial ports LCD.

（6）Electric energy reading circuit based on RS485 buses

The system is by the intelligent power metering device that is arranged on charging pile DC charging major loop（Intelligent electric meter）It is real Existing rechargeable electrical energy metering, support follows the electric energy metering module of DL/T645-2007 communication criterions.MC9S12XEQ512 single-chip microcomputers Realized by RS485 interface circuits and the information exchange between intelligent power metering device, RS485 interface circuits are as shown in Figure 8.Adopt Microcomputer series interface communication is completed to RS485 communication Protocol Conversions with MAX485 chips, realizes the read functions of electric energy consumption data. Wherein, the RO pins and DI pins of MAX485 chips respectively draw by the corresponding RXD3 receptions for being connected to MC9S12XEQ512 microcontroller serial ports Pin and TXD3 send pin；Resistance RE1 is the build-out resistor between differential data signals pin A and B.

（7）LED indicating circuit

The LED indicating circuit realizes that theory structure is as shown in Figure 9 using RGB three-color LEDs RGB5050.By 5 RGB5050 types LED constitutes a strip, and three NPN triodes QB1, QB2 and QB3 are respectively intended to drive R, G and B's of LED Three color fluorescent tubes, its base stage by circuit RB1, RB2 and RB3 be controlled by MC9S12XEQ512 single-chip microcomputers the 9th, 10 and 11 pins, i.e. PT0, PT1 and PT2, so as to show different colors, are used to indicate the different working condition residing for charging pile（Such as： Green represents and can use that yellow represented and charge, and red represents equipment fault etc.）.The LED indicating circuit is an independence Module, wherein Wiring port JPB1 and LED drive triode QB1, QB2, QB3 and master controller to be integrated in a circuit board On, the control to LED indicating circuit is realized using standard connecting line by JPB1 and JPB2.

（8）Auditory tone cues electric circuit

The system, as the auxiliary equipment of man-machine interaction, is completed input through keyboard prompting, voice and carried using industrial voice module Show service, fault warning service.Voice module communication with MC9S12XEQ512 single-chip microcomputers existing by I/O causes for gossip and controlled, it is logical External micro TF cards storage audio files is crossed, the scheduling to voice resource is realized.Controlling switch A10, CN1 of the module, BY respectively be connected to the pin of MC9S12XEQ512 single-chip microcomputers 70,71,72, loudspeaker is connected with industrial toy trumpet, realizes that voice is broadcast Put.As shown in Figure 10.

（9）Charging pile DC charging major loop on-off control circuit

As shown in Figure 11, charging pile DC charging major loop on-off control circuit include by master control circuit controls after Electrical equipment KA1, the D.C. contactor being arranged on charging pile DC charging major loop, the normally opened contact KB of relay KA1 are connected on On the main circuit power supply of D.C. contactor coil KM1, i.e., D.C. contactor coil KM1 is connect by the normally opened contact of relay KA1 To 220V voltage L, N two ends.Charging pile DC charging major loop on-off control circuit is controlled by MC9S12XEQ512 single-chip microcomputers 8th pin PK0, the pin is connected with the input RELAY_PK0 of charging pile DC charging major loop on-off control circuit.As long as 8th pin of MC9S12XEQ512 single-chip microcomputers（PK0）Output low level, is constituted in resistance RA3, RA4 and PNP triode QA1 Under the driving of amplifying circuit, the normally opened contact KB closures of relay KA1, so that D.C. contactor coil KM1 is powered, cause direct current Main contacts closure of the contactor on charging pile DC charging major loop, direct current output control section（I.e. charging pile end powers slotting Seat）Output electric energy；If the 8th pin PK0 of MC9S12XEQ512 single-chip microcomputers is high level, can cut the circuit for exporting It is disconnected.

Also can be under some emergency situations, when main control circuit does not actively cut off electric energy, by scram button circuit, people It is cut-out electric energy output；As shown in Figure 11, scram button circuit, mainly goes here and there by scram button SW, electric capacity CA21 and successively The VCC power supplys of connection, the 4th resistance RA5, the 5th resistance RA6, voltage clamping circuit composition.Voltage clamping circuit uses L44 chips. The series circuit that 5th resistance and voltage clamping circuit are constituted respectively with electric capacity CA21, the scram button normally opened contact simultaneously Connection；The normally-closed contact of the scram button is arranged on the main circuit power supply of D.C. contactor coil；Voltage clamping circuit it is defeated Go out end（Between the 5th resistance and voltage clamping circuit）It is connected with the 57th pin PA0 of single-chip microcomputer.

When scram button SW is pressed, its normally opened contact closure, the output end of scram button circuit is to MC9S12XEQ512 The 57th pin PA0 output low levels of single-chip microcomputer, complete the identification that scram button presses action, so that single-chip microcomputer is made accordingly Treatment.

（10）System supplymentary power circuit

As shown in Figure 12, the part provides system supplymentary power supply for the operation of whole charging pile control device modules Power supply.Separately designed using analog power and digital power during system design, to avoid the mutual of digital circuit and analog circuit Interference, there is provided the stability of a system.In accompanying drawing 12, label+24V ,+15V, -15V ,+12V ,+5V are analog power, are predominantly simulated Circuit is powered；VCC（+5V）It is digital power, is supplying digital circuits, wherein, JPA1 is input into for the electric energy of auxiliary power module Wiring port.Additionally, have also been devised system supplymentary power sense circuit, such as accompanying drawing 13, by resistance RA1, resistance RA2, electric capacity CA19, electric capacity CA20 and diode DA3 are constituted, the 81st pin of output end MCU_PAD07 and MC9S12XEQ512 single-chip microcomputers PAD07 is connected, and the pin is the ADC input pins of single-chip microcomputer MC9S12XEQ512, can be with by the voltage for gathering the pin Determine the stable case of supply voltage, JPA2 is to be detected supply voltage input wires port in figure.When voltage occur it is relatively low or During fluctuation higher, system sends alarm, and terminates charging process, it is ensured that the stable operation of system.

The utility model performs the uniformity problem of standard from New-energy electric vehicle charging equipment, according to GB GBT20234 Part I is related to direct-current charging interface to the electric car conduction charging connecting device that Part III specifies It is required that, devise the electric vehicle alternating-current charging interface circuit based on Freescale MC9S12XEQ512 for master controller and control System processed, has the characteristics that：

1st, device is observed《GBT 20234.1-2011 electric car conduction chargeable connection devices》With《GBT 20234.2- 2011 electric car conduction chargeable connection device third portions：Direct-current charging interface》Requirement, can be the compatible rechargeable standard Charging electric vehicle.

2nd, with Freescale MC9S12XEQ512 as master controller, using the design of function modoularization, each Modular circuit is separate, is installed beneficial to system and debugged, and is easy to system maintenance and system upgrade.

3rd, numerical portion and analog portion are isolated using photoelectrical coupler, effectively reduce mutual interference, The stability of a system is improve, for the reliably and securely operation of equipment when charging provides guarantee.

When the 4th, realizing electric automobile DC charging, feeder ear plug is connected and is confirmed and control guidance function, and completed The Real-time Collection of charged state parameter, completes the monitor in real time to charging electric vehicle process.

The utility model design is the electric automobile DC charging of master controller based on Freescale MC9S12XEQ512 Interface circuit and control device, detailed analysis and design is carried out to each functional circuit that the device is related to, and realizes new energy During source electric car DC charging, charging inlet connection confirms, charging process controls monitoring, charging process power and electrical energy parameter The functions such as transmission.The use of photoelectric isolation technology and device, realizes signals security isolation, improves the reliability of system operation Property.Design content is researched and developed for charging equipment of electric automobile and infrastructure construction has certain reference value.

Above-described is only preferred embodiment of the present utility model, it is noted that for those skilled in the art For, under the premise of the utility model general idea is not departed from, some changes and improvements can also be made, these should also be considered as Protection domain of the present utility model.

Claims (10)

1. a kind of novel electric vehicle direct-current charging post control system, it is characterised in that：It includes main control circuit, and respectively Can bus driving circuits, onboard system power-supplying circuit, card-punching system interface circuit, the power being connected with main control circuit Conversion interface circuit, charging pile DC charging major loop on-off control circuit and auditory tone cues electric circuit, the can bus drivers electricity Road and onboard system power-supplying circuit pass through charging pile end charging socket connecting electric automobile end charging plug respectively；It is described to fill Electric stake end charging socket is arranged on charging pile DC charging major loop, and it is laid with least nine contact points.

2. a kind of novel electric vehicle direct-current charging post control system according to claim 1, it is characterised in that：The master Control circuit includes MC9S12XEQ512 single chip circuits, and the reset being connected with MC9S12XEQ512 single chip circuits respectively Circuit, crystal oscillating circuit, interface circuit.

3. a kind of novel electric vehicle direct-current charging post control system according to claim 1, it is characterised in that：It is described Can bus driving circuits use the CAN drive circuit of AD8138 chips.

4. a kind of novel electric vehicle direct-current charging post control system according to claim 1, it is characterised in that：It is described Can bus driving circuits include the first resistor that is sequentially connected in series and second resistance, differential amplification chip AD8138, the first electric capacity and Second electric capacity, 3rd resistor and the 4th resistance, AD8138 are also parallel with the 5th resistance and the 6th resistance.

5. a kind of novel electric vehicle direct-current charging post control system according to claim 1, it is characterised in that：The car Relay of the loading system power-supplying circuit including circuit control, amplifying circuit and the contact being connected on main circuit power supply are opened Close.

6. a kind of novel electric vehicle direct-current charging post control system according to claim 1, it is characterised in that：The sound Sound cue circuit includes voice module, miCro_TF storage cards, industrial toy trumpet.

7. a kind of novel electric vehicle direct-current charging post control system according to claim 6, it is characterised in that：The work Industry toy trumpet uses 2.5W loudspeaker.

8. a kind of novel electric vehicle direct-current charging post control system according to claim 1, it is characterised in that：It is described to fill Electric stake end charging socket includes at least nine contact points, and nine contact points are respectively：Positive contact point, cathode contact point, Ground protection contact point, CANH contact points, CANL contact points, offboard system connection confirm that contact point, onboard system connection are true Recognize contact point, low pressure accessory power supply positive contact point, low pressure accessory power supply cathode contact point；Nine contact points and electronic vapour The charging plug correspondence contact point connection of car end.

9. a kind of novel electric vehicle direct-current charging post control system according to claim 1, it is characterised in that：The control System processed also includes that the charging cable connection being connected with main control circuit respectively confirms that circuit, serial ports screen interface circuit, electric energy are read Sense circuit, LED indicating circuit and warning circuit, the electric energy reading circuit also be arranged on charging pile DC charging major loop The connection of intelligent power metering device, charging cable connection confirms circuit and is connected on charging pile DC charging major loop The connection of charging pile end charging socket.

10. a kind of novel electric vehicle direct-current charging post control system according to claim 1, it is characterised in that：Also wrap Include the system supplymentary power circuit that power supply is provided for the charging pile control device.