CN113246780A - Direct current charging pile control system and method - Google Patents
Direct current charging pile control system and method Download PDFInfo
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- CN113246780A CN113246780A CN202110145141.2A CN202110145141A CN113246780A CN 113246780 A CN113246780 A CN 113246780A CN 202110145141 A CN202110145141 A CN 202110145141A CN 113246780 A CN113246780 A CN 113246780A
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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
- B60L53/60—Monitoring or controlling charging stations
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
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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
- B60L53/60—Monitoring or controlling charging stations
- B60L53/65—Monitoring or controlling charging stations involving identification of vehicles or their battery types
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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
- B60L53/60—Monitoring or controlling charging stations
- B60L53/66—Data transfer between charging stations and vehicles
- B60L53/665—Methods related to measuring, billing or payment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
- Y02T90/167—Systems 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]
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS 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
- Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
- Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
- Y04S30/12—Remote or cooperative charging
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a direct current charging pile control system which comprises a main control circuit, an insulation detection circuit, a CAN communication circuit, a voltage detection circuit, a power distribution module, a card reader and a display, wherein the power distribution module acquires vehicle charging power and automatically controls the magnitude of output current according to a first preset condition, the main control circuit is respectively connected with a vehicle-mounted control system and a power calculation module through the CAN communication circuit to acquire vehicle charging information and control the charging power, and is also respectively connected with terminal equipment through the CAN communication circuit to control the starting and stopping of a charging pile through the terminal equipment.
Description
Technical Field
The invention relates to the field of charging piles, in particular to a direct-current charging pile control system and method.
Background
With the continuous exploration and development of the new energy field, the new energy electric automobile field shows a vigorous vigor. The nation proposes to mainly develop technologies of plug-in hybrid electric vehicles, pure electric vehicles and fuel cell vehicles, develop research and development of plug-in hybrid electric vehicles and pure electric vehicles and large-scale commercial demonstration engineering, and promote industrial application. In recent years, new energy electric vehicles develop rapidly, the demand for charging piles is also increased year by year, the requirements for the stability of the charging piles, the diversity of pile functions and the pile cost are also improved, in the existing direct-current charging pile controller, when the charging gun is controlled to charge the electric vehicles, the temperature of the charging gun during charging, the voltage during charging, the current during charging and the like are detected, so that the charging is controlled, but the existing charging pile can only output one charging power, the current vehicles have different charging powers, the charging pile can not meet the demands of different vehicles, and the service life of the batteries of the electric vehicles can be reduced.
Disclosure of Invention
Aiming at the technical problems, the invention provides a direct current charging pile control system and a direct current charging pile control method, which not only prolong the service life of an electric vehicle battery, but also reduce interference and facilitate debugging personnel to debug.
The first aspect of the embodiment of the invention provides a direct current charging pile control system which comprises a main control circuit, an insulation detection circuit, a CAN communication circuit, a voltage detection circuit, a power distribution module, a card reader and a display, wherein the power distribution module acquires vehicle charging power and automatically controls the magnitude of output current according to a first preset condition, the main control circuit is respectively connected with a vehicle-mounted control system and a power calculation module through the CAN communication circuit to acquire vehicle charging information and control the charging power, and the main control circuit is also respectively connected with terminal equipment through the CAN communication circuit to control the starting and stopping of a charging pile through the terminal equipment.
Optionally, a plurality of charging guns is further included, the charging guns including single guns and dual guns.
Optionally, when the charging gun is a single gun, the first preset condition includes that whether the vehicle charging power is smaller than the maximum power of the charging pile is judged, when the vehicle charging power is smaller than the maximum power of the charging pile, the power distribution module controls the output current according to the vehicle charging power, and otherwise, the power distribution module controls the output current according to the maximum output power of the charging pile.
Optionally, when the charging guns are double guns, the first preset condition includes that whether the double guns are charged in parallel or not is judged, when the double guns are charged in parallel, the power distribution module automatically controls the magnitude of the output current according to a second preset condition, and otherwise, the power distribution module automatically controls the magnitude of the output current according to a third preset condition.
Optionally, the charging device further comprises a protection circuit and an electronic locking device, wherein the protection circuit is used for ensuring the safety and the reliability of the charging process, and the electronic locking device is used for locking the charging gun in the charging process.
Optionally, the wireless communication device further comprises an RS485 communication circuit and/or an RS232 communication circuit, and the main control circuit is connected with the RS485 communication circuit and/or the RS232 communication circuit respectively.
Optionally, the charging gun connection detection circuit is further included, and the charging gun connection detection circuit is respectively connected with the card reader and the main control circuit and is used for detecting whether the charging gun is connected with the vehicle or not, acquiring vehicle information and judging whether the vehicle meets charging conditions or not, and if yes, the main control circuit controls the charging gun to start charging.
Optionally, still include power supply circuit, the rifle that charges is connected detection circuitry and is confirmed contact, operational amplifier and opto-coupler including the connection that charges, the output of the connection that charges and confirm the contact is connected with operational amplifier's normal phase input, power supply circuit's output is connected with operational amplifier's inverting input, operational amplifier's output is connected with the input of opto-coupler, the output of opto-coupler is connected with main control circuit's input.
Optionally, the intelligent lamp comprises a status indicator lamp control circuit, and the output end of the main control circuit is connected with the input end of the status indicator lamp control circuit.
The second aspect of the embodiments of the present invention provides a method for controlling a dc charging pile, where the method includes: connecting a charging gun with an electric automobile; reading vehicle information through a card reader and transmitting the vehicle information to a main control circuit, and carrying out authority authentication by the main control circuit according to the vehicle information; the main control circuit obtains the charging power of the vehicle after the identification is successful, and controls the power distribution module to automatically control the output current according to a first preset condition.
In the technical scheme provided by the embodiment of the invention, the power distribution module acquires the charging power of the vehicle and automatically controls the magnitude of the output current according to the first preset condition, the main control circuit is respectively connected with the vehicle-mounted control system and the power calculation module through the CAN communication circuit to acquire the charging information of the vehicle and control the charging power, so that compared with the prior art, the embodiment of the invention CAN automatically distribute the charging current according to the charging power of the vehicle and prolong the service life of the vehicle battery, and further comprises an external equipment debugging interface which CAN more intuitively display the measured pile parameters, CAN conveniently debug the external equipment, quickly detect the condition of the external equipment and greatly facilitate the debugging of debugging personnel.
Drawings
Fig. 1 is a schematic circuit structure diagram of a dc charging pile control system according to the present invention;
FIG. 2 is a schematic circuit diagram of the DC charging pile control system when connected with an electric vehicle according to the present invention;
FIG. 3 is a schematic diagram of network communication logic of the DC charging pile control system according to the present invention;
fig. 4 is a schematic diagram of a charging control logic of the dc charging pile control system according to the present invention;
FIG. 5 is a schematic diagram of the distribution of charging power to a single gun of the DC charging pile control system according to the present invention;
FIG. 6 is a schematic diagram of the dual-gun charging power distribution of the DC charging pile control system according to the present invention;
fig. 7 is a schematic flow chart of the dc charging pile control method according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making an invasive task, are within the scope of the present invention.
Referring to fig. 1, an embodiment of the dc charging pile control system in the embodiment of the present invention includes: the device comprises a main control circuit 10, an insulation detection circuit 12, a CAN communication circuit 16, a voltage detection circuit 19, a power distribution module 11, a card reader and a display 15, wherein the insulation detection circuit 12 is used for detecting the resistance value of an insulation resistor, and the card reader is used for reading the content of an M1 card and is used for swiping the card for charging. The power distribution module 11 acquires vehicle charging power and automatically controls the magnitude of output current according to a first preset condition, the main control circuit 10 is respectively connected with the vehicle-mounted control system and the power distribution module 11 through the CAN communication circuit 16 to acquire charging information of a vehicle and control charging power, the main control circuit 10 is also respectively connected with terminal equipment through the CAN communication circuit 16 to control the charging pile to start and stop through the terminal equipment.
The main control circuit of the invention communicates with the vehicle through the CAN communication circuit 16 to obtain the charging information, communicates with the power distribution module 11 through the CAN communication circuit 16 to control the charging power, and controls the output current of the power distribution module 11 according to the charging power of the vehicle and whether the vehicle is charged singly or doubly, thereby preventing the service life of the battery from being reduced under the condition of unmatched charging current of the vehicle.
The display 15 is used for displaying the overall data of the charging pile, a user can modify parameters, select a charging function and debug the charging pile through a screen of the display 15, a good visual human-computer interaction interface is provided, so that the user can feel more comfortable, the display 15 further comprises a display adapter plate, a WE5500 network chip on the display adapter plate is connected with the server 17, so that the parameters of the charging pile can interact with an external platform, and the user can control the starting and stopping of the charging pile and the setting of charging time, network parameters and the like through a mobile phone APP.
The control system also comprises an RS485 communication circuit and/or an RS232 communication circuit, and the main control circuit is respectively connected with the RS485 communication circuit and/or the RS232 communication circuit. According to the invention, data interaction can be carried out with the display 15 through the RS232 communication interface on the display adapter plate, so that the anti-interference capability is enhanced. Data interaction is carried out through the RS485 communication circuit on the display adapter plate and the main controller 10, and the anti-interference capacity is greatly enhanced. The system issues an instruction to the main control circuit 10 through the display adapter plate to control the start and stop of the charging of the main control circuit 10.
In one embodiment, the control system further comprises a protection circuit and an electronic locking device, wherein the protection circuit is used for ensuring the safety and reliability of the charging process, and the electronic locking device is used for locking the charging gun during the charging process.
In one embodiment, the control system further includes a charging gun connection detection circuit, which is respectively connected to the card reader and the main control circuit, and is configured to detect whether the charging gun is connected to the vehicle, acquire vehicle information, and determine whether the vehicle meets a charging condition, and if so, the main control circuit controls the charging gun to start charging.
In one embodiment, the control system further includes a power supply circuit, the charging gun connection detection circuit includes a charging connection confirmation contact, an operational amplifier and an optical coupler, an output end of the charging connection confirmation contact CC1 is connected to a positive input end of the operational amplifier, an output end of the power supply circuit is connected to a negative input end of the operational amplifier, an output end of the operational amplifier is connected to an input end of the optical coupler, and an output end of the optical coupler is connected to an input end of the main control circuit. The invention receives feedback information through the optical coupler with isolation, thereby enhancing the anti-interference capability.
In one embodiment, the insulation detection circuit 12 employs a voltage-type measurement scheme, which can measure the insulation resistance more accurately. The control system also includes an electricity meter 18, a relay 14 and a voltage transducer 13.
Through 12V relay control external equipment, through 485 and the communication of insulating detection circuit 12, obtain D + and D-insulation resistance to ground, through 485 and ammeter communication, obtain ammeter 18 data. The insulation detection circuit 12 adopts a voltage type measurement scheme, and can measure the insulation resistance more accurately. The voltage transmitter 13 can quickly and accurately acquire the voltage outside the K1K2, and the safety of the charging process is ensured.
Referring to fig. 2, the control system includes an off-board charger, a vehicle interface and an electric vehicle, the off-board charger includes an AC/DC module, a voltage/DC module, an off-board charger controller, the off-board charger controller controls relays K1, K2, K3 and K4 respectively, the K1 and K2 are connected to a battery pack of the electric vehicle through relays K5 and K6, and the other ends of the relays K3 and K4 are connected to the vehicle controller.
Before the user uses the charging gun, the charging gun is required to be inserted into the vehicle electric automobile, at the moment, the display interface jumps to the charging mode selection interface, and the user can select one of an IC card charging mode, a two-dimensional code charging mode and a plug-and-play charging mode through the display. If the IC card is selected for charging, a charging scheme selection interface is entered, so that a user can select the set money amount charging or automatic full charging function, and the charging can be started by swiping the card after confirmation. Select the two-dimensional code to charge, can pop out the two-dimensional code interface, the user can use APP to sweep the sign indicating number and start charging. The charging can be carried out immediately when the charging gun is inserted, a user can obtain the vehicle VIN, and the function of charging immediately when the plug-in is realized. Fill electric pile before starting to charge and can carry out essential safety inspection, fill electric pile and detect relay K1K2 internal voltage through the ammeter, voltage transducer detects K1K2 outside voltage. The charging pile end can detect whether the voltage outside the K1K2 meets the standard requirement of less than 10V or not in the process of safety detection, whether the positive and negative ground insulation resistance of the charging gun meets the standard requirement or not, and whether the voltage inside and outside the K1K2 meets the standard or not can be judged when the charging power supply is switched on. As shown in fig. 3, firstly, after the communication of the handshake message and the vehicle handshake are successful, the charging pile waits for the readiness of the charging pile to send a charging pile readiness message, and at the same time, waits for receiving the vehicle readiness message, and the charging pile and the vehicle are ready to configure the charging parameters, and the main control circuit controls the power distribution module to output the charging current. And when the vehicle finishes the process, the vehicle can report a finishing message, and the vehicle end can also transmit a charging pile finishing message to exchange finishing information. The display can conveniently check the charging record and the version information of the charging pile software, and is favorable for maintaining the charging pile. The invention has good background interface, the background can be opened to enter the interface by clicking the electric pile trademark of the upper left corner garage, and the user can enter the background by inputting correct password. The background interface comprises a parameter setting interface, a network setting interface, a fault shielding interface, a background recording interface, a measurement data interface and a manual control interface. Pile parameters such as charging current, charging power and charging voltage of the charging pile can be set on the parameter setting interface. The network IP parameters and the charging pile numbers can be set on a network setting interface, and meanwhile, the network message receiving and sending states can be monitored. The fault information of the charging pile can be checked and shielded on the fault shielding interface. Historical fault information of the charging pile can be checked on a background recording interface. The external equipment information of the charging pile, such as the voltage and the current of an electric meter, the voltage and the current of a power supply module, the voltage of a transmitter, the resistance value of an insulation resistor and the like can be seen in the test interface. The resistance value of the insulation resistor is smaller than the preset value, which shows that the power supply is short-circuited to the ground and has the risk of electric leakage. Can force the debugging external equipment who fills electric pile at manual control interface, for example can force power module output voltage and then judge whether power module works, can force opening and closing of the electron locking device switch of control rifle that charges, can the backstage start. The control system can detect the feedback information of emergency stop feedback, input loop state feedback, lightning protection feedback, electronic lock position feedback, main contactor feedback, auxiliary contactor feedback, entrance guard feedback and input alternating current contactor feedback, and performs corresponding processing, so that the safety is high.
Referring to fig. 4, a charging control logic diagram of the present invention is shown, which detects the voltage across CC1, determines whether the voltage of CC1 is approximately equal to 4V, and when the voltage of CC1 is approximately equal to 4V, it indicates that the gun is plugged, the electronic locking device is closed, the ac contactor is closed, APP starts charging, or card swiping starts charging or plug-and-play charging. And then handshaking is carried out, insulation detection is carried out by closing K3 and K4, charging is carried out after the insulation detection is successful, and after the charging is finished, the electronic locking device is unlocked and the alternating current contactor is disconnected.
The charging gun comprises a single gun and a plurality of guns, when the charging gun is a single gun, the first preset condition comprises whether vehicle charging power is smaller than the maximum power of a charging pile, specifically, refer to a single gun charging power distribution diagram shown in fig. 5, detect the online number of power distribution modules, and monitor vehicle requirements, namely vehicle charging power, when the vehicle requirements are smaller than the maximum power of the pile, the power distribution modules output current according to the vehicle requirements, namely control the magnitude of the output current according to the vehicle charging power, otherwise, the power distribution modules control the magnitude of the output current according to the maximum output capability of the charging pile, namely control the magnitude of the output current according to the maximum output power of the charging pile.
When the charging guns are double guns, the first preset condition includes judging whether the double guns are in parallel charging, as shown in fig. 6, when the double guns are in parallel charging, detecting the online number of the power modules, namely the power distribution modules, monitoring the vehicle demand, judging whether the double guns are in parallel charging, when the double guns are in parallel charging, judging whether the vehicle demand is less than the maximum power of a single gun, when the vehicle demand is less than the maximum power of the single gun, controlling the module to which the gun belongs to output current from the double guns according to the vehicle demand, otherwise, controlling the module to which the gun belongs to output charging current from the double guns according to the maximum output power of the charging pile. When the vehicle is not charged in parallel, whether the vehicle demand is smaller than the maximum power of the single gun or not is judged, and when the vehicle demand is smaller than the maximum power of the single gun, the module to which the gun belongs is controlled to output charging current from the current gun according to the vehicle demand. Otherwise, judging whether the other charging gun is idle, if so, judging whether the vehicle requirement is smaller than the maximum power of the charging pile, if so, controlling the power module to output current according to the vehicle requirement, and otherwise, controlling the power module to output the charging current according to the maximum output capacity of the charging pile.
The control system also comprises a state indicator lamp control circuit, and the output end of the main control circuit is connected with the input end of the state indicator lamp control circuit.
The present invention further includes a method for controlling a dc charging pile, please refer to fig. 7, where the method includes:
s10, connecting the charging gun with the electric automobile;
s20, reading the vehicle information through the card reader and transmitting the vehicle information to the main control circuit, and the main control circuit carries out authority authentication according to the vehicle information;
and S30, the main control circuit obtains the charging power of the successfully-identified vehicle and controls the power distribution module to automatically control the output current according to a first preset condition.
The control system of the invention adopts the optical coupling isolation circuit, reduces the interference, and also comprises an external equipment debugging interface, which can intuitively display the measured pile body parameters, can conveniently debug the external equipment, quickly detect the conditions of the external equipment and greatly facilitate the debugging of debugging personnel.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The direct-current charging pile control system is characterized by comprising a master control circuit, an insulation detection circuit, a CAN communication circuit, a voltage detection circuit, a power distribution module, a card reader and a display, wherein the power distribution module acquires vehicle charging power and automatically controls the magnitude of output current according to a first preset condition, the master control circuit is respectively connected with a vehicle-mounted control system and the power distribution module through the CAN communication circuit to acquire charging information of a vehicle and control the charging power, and is also respectively connected with terminal equipment through the CAN communication circuit to control the starting and stopping of a charging pile through the terminal equipment.
2. The dc charging post control system of claim 1, further comprising a plurality of charging guns, the charging guns comprising a single gun and a double gun.
3. The direct-current charging pile control system according to claim 2, wherein when the charging gun is a single gun, the first preset condition includes that whether the vehicle charging power is smaller than the maximum charging pile power is judged, when the vehicle charging power is smaller than the maximum charging pile power, the power distribution module controls the magnitude of the output current according to the vehicle charging power, and otherwise, the power distribution module controls the magnitude of the output current according to the maximum output power of the charging pile.
4. The direct-current charging pile control system according to claim 2, wherein when the charging guns are double guns, the first preset condition comprises that whether the double guns are charged in parallel or not is judged, when the double guns are charged in parallel, the power distribution module automatically controls the magnitude of the output current according to a second preset condition, and otherwise, the power distribution module automatically controls the magnitude of the output current according to a third preset condition.
5. The direct current charging pile control system according to claim 1, further comprising a protection circuit and an electronic locking device, wherein the protection circuit is used for ensuring safety and reliability of a charging process, and the electronic locking device is used for locking the charging gun in the charging process.
6. The direct current charging pile control system according to claim 1, further comprising an RS485 communication circuit and/or an RS232 communication circuit, wherein the main control circuit is connected with the RS485 communication circuit and/or the RS232 communication circuit respectively.
7. The direct-current charging pile control system according to claim 2, further comprising a charging gun connection detection circuit, wherein the charging gun connection detection circuit is respectively connected with the card reader and the main control circuit and is used for detecting whether the charging gun is connected with a vehicle, acquiring vehicle information and judging whether the vehicle meets charging conditions, and if so, the main control circuit controls the charging gun to start charging.
8. The direct current charging pile control system according to claim 7, further comprising a power supply circuit, wherein the charging gun connection detection circuit comprises a charging connection confirmation contact, an operational amplifier and an optical coupler, an output end of the charging connection confirmation contact is connected with a positive phase input end of the operational amplifier, an output end of the power supply circuit is connected with an inverse phase input end of the operational amplifier, an output end of the operational amplifier is connected with an input end of the optical coupler, and an output end of the optical coupler is connected with an input end of the main control circuit.
9. The direct-current charging pile control system according to claim 1, further comprising a status indicator lamp control circuit, wherein the output end of the main control circuit is connected with the input end of the status indicator lamp control circuit.
10. A direct current charging pile control method is characterized by comprising the following steps:
connecting a charging gun with an electric automobile;
reading vehicle information through a card reader and transmitting the vehicle information to a main control circuit, and carrying out authority authentication by the main control circuit according to the vehicle information;
the main control circuit obtains the charging power of the vehicle after the identification is successful, and controls the power distribution module to automatically control the magnitude of the output current according to a first preset condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110145141.2A CN113246780A (en) | 2021-02-02 | 2021-02-02 | Direct current charging pile control system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110145141.2A CN113246780A (en) | 2021-02-02 | 2021-02-02 | Direct current charging pile control system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113246780A true CN113246780A (en) | 2021-08-13 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113682164A (en) * | 2021-08-23 | 2021-11-23 | 国网智慧能源交通技术创新中心(苏州)有限公司 | Ship large-current charging control system and charging method |
| CN113715644A (en) * | 2021-09-14 | 2021-11-30 | 南京信息职业技术学院 | Electric automobile direct current interface and charging system that charges |
| CN113954683A (en) * | 2021-11-25 | 2022-01-21 | 湖北德普电气股份有限公司 | Direct-current filling pile detection method and control system |
| CN114056167A (en) * | 2021-11-30 | 2022-02-18 | 广东易正电气股份有限公司 | Overload protection device and overload protection method for charging pile |
| CN115534741A (en) * | 2022-12-05 | 2022-12-30 | 南京鲸翼电力新能源有限公司 | Integrated PCM module for charging device and control method |
| CN117162849A (en) * | 2023-10-31 | 2023-12-05 | 万帮数字能源股份有限公司 | Multi-gun simultaneous charging system, communication system thereof and charging pile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113682164A (en) * | 2021-08-23 | 2021-11-23 | 国网智慧能源交通技术创新中心(苏州)有限公司 | Ship large-current charging control system and charging method |
| CN113715644A (en) * | 2021-09-14 | 2021-11-30 | 南京信息职业技术学院 | Electric automobile direct current interface and charging system that charges |
| CN113954683A (en) * | 2021-11-25 | 2022-01-21 | 湖北德普电气股份有限公司 | Direct-current filling pile detection method and control system |
| CN114056167A (en) * | 2021-11-30 | 2022-02-18 | 广东易正电气股份有限公司 | Overload protection device and overload protection method for charging pile |
| CN115534741A (en) * | 2022-12-05 | 2022-12-30 | 南京鲸翼电力新能源有限公司 | Integrated PCM module for charging device and control method |
| CN117162849A (en) * | 2023-10-31 | 2023-12-05 | 万帮数字能源股份有限公司 | Multi-gun simultaneous charging system, communication system thereof and charging pile |
| CN117162849B (en) * | 2023-10-31 | 2024-03-22 | 万帮数字能源股份有限公司 | Multi-gun simultaneous charging system, communication system thereof and charging pile |
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Application publication date: 20210813 |