CN111262276A - Intelligent orderly charging system for alternating-current piles and method for realizing intelligent orderly charging system by using series networking - Google Patents
Intelligent orderly charging system for alternating-current piles and method for realizing intelligent orderly charging system by using series networking Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
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- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/126—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
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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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
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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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- 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
- Y04S30/14—Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing
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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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides an intelligent orderly charging system, method and circuit for an alternating current pile, which can operate in two working modes of off-grid and networking, and is realized by adopting a hand-in-hand series networking mode when internal networking is required, wherein the series networking mode is as follows: the master LAN2 is connected to the slave 1 LAN1, the slave 1 LAN2 is connected to the slave 2 LAN1, and the slave N-1 LAN2 is connected to the slave N LAN 1. In the off-network mode, when the host fails and cannot work continuously, the charging pile with higher priority is switched from the slave mode to the host mode control system, and the priority is determined by the internal networking ID of the charging pile during configuration. The system is adaptive to different requirements of different places, and is stable in operation, low in construction and wiring difficulty and capable of saving wires.
Description
Technical Field
The invention relates to an electric vehicle charging system, in particular to an intelligent orderly charging system for alternating current piles and a method for realizing a series networking mode.
Background
With the continuous deepening of global energy crisis, the gradual depletion of petroleum resources, the aggravation of air pollution and global temperature rise, governments and automobile enterprises in various countries generally realize that energy conservation and emission reduction are the direction of future automobile technology development, and the development of electric automobiles is the best way for solving the two problems. With the increase of electric automobiles, the power grid load capacity of some regions or specific places is limited, and the load can exceed the power grid load during the peak period of power utilization. Therefore, intelligent and orderly charging needs to be developed to reduce the pressure of a power grid and reasonably arrange charging. At present, two schemes of networking cloud platform control or off-network concentrator control are available, wherein the networking cloud platform control is that piles are connected with a cloud platform through GPRS, WIFI or Ethernet, the concentrator control is that the piles are connected with a concentrator through RS232 or RS485 and other modes, the piles upload data to the cloud platform or the concentrator, and the cloud platform or the concentrator is combined with regional power grid load capacity, charging user requirements and other aspects to reasonably and orderly control charging power and charging time of charging piles. Under the control mode of the off-grid concentrator, if the concentrator fails and stops working, the system works abnormally, and the stable work of the system cannot be achieved. In the existing Ethernet networking mode, each pile needs to be connected with a network cable to a router or a switch, so that the construction difficulty is high, and the wire rods are wasted.
In conclusion, the technical problems to be solved are ① networking and off-network universal, ② controller switching problem when the controller fails in an off-line state, and ③ networking wiring complexity.
In the prior art, a two-chip mode is adopted, wherein a low main frequency chip is responsible for hardware bottom layer control, and a high main frequency chip is responsible for logic and communication processing. Therefore, the data processing capacity of the piles is improved, the piles have the capacity of carrying out logic and data processing on the whole system, the problem of networking and off-network universality is solved, each pile can be used as a host of the whole system, and the problem that the controller can be switched when in failure is solved. Under the networking work, the system uses the network cable as a CAN communication cable, the LAN1 port CAN be used as a network port or an internal CAN communication port, and the LAN2 port is only used as the internal CAN communication port, so that a networking mode of connecting hands in series is formed, and the problem of complex wiring is solved. Because the product adopts two processing chips, the cost is increased; the system has an autonomous switching master-slave mode, so the problem of configuration is complicated.
Disclosure of Invention
The invention aims to overcome the defects of the existing product scheme, provides a new-mode alternating current charging pile intelligent ordered charging system and a method for realizing a series networking mode, and mainly solves the problems of insufficient load capacity of a power grid in partial areas, networking and off-network universality, complex construction and wiring, insufficient reliability of the existing system and the like.
The serial networking method comprises a LAN1 and a LAN2, wherein a master (LAN 2) is connected with a slave 1 (LAN 1), the slave 1 (LAN 2) is connected with a slave 2 (LAN 1), a slave N-1 (LAN 2) is connected with a slave N (LAN 1), and the like.
The intelligent orderly charging system for the alternating-current pile comprises a cloud platform, a charging controller (MCU), a communication processing unit (TCU) and a network communication module (GPRS, WIFI and LAN). Under the off-network state, the charging controller and the communication processing unit are communicated with each other, the host communication processing unit and all the slave communication processing units are communicated with each other, and the connection mode is shown in the attached figure 1. In the state of Ethernet networking, internal data interaction is realized by a serial internal networking mode, network communication is carried out through a host, a charging controller is communicated with a communication processing unit, the host communication processing unit is communicated with all slave communication processing units and a cloud platform at the same time, and the connection mode is shown in the attached figure 2. Under GPRS or WFIF networking state, do not need internal network deployment, each fills electric pile and independently connects the cloud platform, and charge controller and communication processing unit intercommunication, communication processing unit and cloud platform intercommunication, the connected mode is as shown in figure 3.
As an operator, when a charging site is deployed, whether networking is performed or not can be selected, which networking mode is selected for networking, and when a charging pile is installed, relevant configuration parameters (for example, whether a membership charging policy, an internal networking ID and the like are used or not) need to be configured. When the off-grid state operation is selected, the charging pile communication processing unit selects a high-frequency processing chip and is provided with a storage chip, enough resources are provided for carrying out ordered charging control on the whole system, and an operator needs to control the total quantity of off-line networking piles to prevent the system from running breakdown.
The intelligent and orderly charging method of the alternating-current charging pile comprises the following steps:
all charging switches in the same planning area upload real-time data to a host or a cloud platform;
the method comprises the steps that a host or a cloud platform is combined with the charging power of a currently charging pile body to set the maximum allowable output power of the currently charging pile body;
calculating the current residual load capacity by combining the current charging power and the total load capacity of the power grid;
adjusting the current charging strategy according to the current residual load capacity, the member level of the queued charging user, the charging rule (such as the charging habit of the user, the reserved time period of the user) and other related priority modes;
when the charging strategy is that the current residual load capacity is half of the previous stage load capacity, the maximum allowable output power controlled by the charging pile before starting charging is half of the previous stage maximum allowable output power, as shown in fig. 4;
in the queuing mode, charging is reasonably arranged according to strategies such as first-ranking first-charging and member level system, the number of the pile bodies and users can be charged maximally and simultaneously under the condition of ensuring the normal load capacity of the power grid, and each trolley can be fully charged as far as possible.
Compared with the prior art, the invention has the following beneficial effects:
① the system can operate in two modes of networking and off-network, which increases the selectivity of operators and better adapts to different requirements of different places;
the ② system communication processing unit supports the use of gigabit Ethernet, conforms to the current network development, also provides faster data transmission capability, ensures the connection speed of the network and has stronger user experience.
③ under the off-network mode, any one charging pile can be used as a host control system, when the host fails and does not work, the charging pile with higher priority is switched from the slave mode to the host mode control system, and the priority is determined by the networking ID inside the charging pile during configuration, so that the system can be ensured to run more stably;
④ under the operation of internal networking, the system uses the network cable as CAN \ RS485 communication line, LAN1 port CAN be used as Ethernet port or internal communication port, LAN2 is used only as internal communication port, the internal structure is shown in figure 5, thus forming a hand-in-hand serial networking mode, reducing the difficulty of construction and wiring and saving the wire.
Drawings
FIG. 1 is a diagram of an offline internal networking connectivity approach in accordance with the present invention;
FIG. 2 is an Ethernet networking connection according to the present invention;
FIG. 3 is a GPRS and WIFI networking connection method according to the present invention;
FIG. 4 is a charging strategy analysis table according to the present invention;
fig. 5 is a block diagram of an internal networking concept according to the present invention.
Detailed Description
In order that those skilled in the art will better understand the embodiments of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying drawings and the embodiments.
As shown in fig. 1, 2 and 3, the invention CAN operate in two working modes of off-network and networking, the networking CAN select ethernet, GPRS or WIFI, the connection mode of the internal networking of the charging pile CAN select CAN or RS485, the internal networking is required to realize the hand-in-hand serial networking mode of the invention in the ethernet networking mode, the ethernet CAN realize gigabit network transmission rate, and the application scene of the product is increased.
The invention specifically realizes the following steps of intelligent and ordered charging of the alternating-current pile:
when an operator installs and fills the electric pile in a construction mode, the operator needs to configure some relevant operating parameters (such as internal networking ID, networking mode, cloud platform IP address, cloud platform port number, WIFI account number, WIFI password and the like) through the upper computer. Configuring a network working mode of a charging pile: in an off-line mode, an internal networking ID and a default master-slave mode of a pile are required to be configured, and an ordered intelligent charging strategy and the total load capacity of a power grid under off-line operation are required to be configured; in the ethernet mode, an internal networking ID and a master-slave mode (the master-slave mode cannot be changed) as well as an IP and a port number of the cloud platform need to be configured; in the GPRS/WIFI mode, only the IP and the port number of the cloud platform need to be configured.
Under the condition that internal networking is needed, whether the communication mode is CAN or RS485 needs to be determined. In fig. 5, the switch K1 includes a master switch K1 and a slave switch K1, and the switch K2 includes a master switch K2 and a slave switch K2. In the off-grid mode, both K1 and K2 of the master in fig. 5 are open, K1 of the slave in fig. 5 is open, and K2 is closed; in the ethernet mode, K1 of the master is closed and K2 is open in fig. 5, and K1 and K2 of the slave are open in fig. 5. As shown in fig. 1 and 2, the intranet connection is such that a master (LAN 2) is connected to a slave 1 (LAN 1), a slave 1 (LAN 2) is connected to a slave 2 (LAN 1), a slave N-1 (LAN 2) is connected to a slave N (LAN 1), and so on.
In the off-network mode, all the slave machines upload real-time data to the host machine; in the Ethernet mode, all the slave machines upload real-time data to the host machine, the host machine is connected to the cloud platform through gigabit Ethernet chips, and uploads all the data of the slave machines and the host machine to the cloud platform; and in the GPRS/WIFI mode, all charging piles upload real-time data to the cloud platform.
And counting the charging condition of each charging pile by the cloud platform or the host, if the charging pile is judged to be stable, setting the stable charging power as the maximum allowable charging power by adjusting the PWM duty ratio of the CP signal, and finally calculating the residual load capacity of the power grid according to the total load capacity of the power grid.
According to the actually calculated remaining load capacity of the power grid, the maximum charging power is reversely deduced by combining the current remaining load capacity and the maximum allowable charging power corresponding table in fig. 4, as shown in fig. 4, when the current remaining load capacity is half of the previous stage of load capacity, the maximum allowable output power controlled by the charging pile before starting charging is half of the previous stage of maximum allowable output power, and when the maximum allowable charging power is smaller than the relevant charging pile standard (according to the GBT 18487.1-2015 standard, the minimum output power controlled by PWM is single-phase (1.32 KW) and three-phase (3.96 KW)), the charging is not allowed to enter the queuing charging mode. And in the queuing charging mode, starting charging is carried out according to the maximum allowable charging power strictly so as to ensure that the power grid works normally.
The operator can set up related membership systems and charging rules to reasonably arrange the car owner to carry out ordered charging operation, wherein the charging rules comprise charging habits of users, reserved time periods of the users and the like. Under the operation of the system, the number of the charging piles which are charged simultaneously in one load area is maximized as much as possible.
Under the off-grid mode, an operator needs to update an intelligent ordered charging strategy at regular time (the operator can control the maximum output power of a charging pile according to the charging flow of different time periods and the load capacity of a power grid) so as to meet the maximum energy efficiency operation of systems under different working conditions and at different times.
Under the off-network mode, when the host fails and cannot work continuously, the charging pile with higher priority is switched from the slave mode to the host mode control system, and the priority is determined by the internal networking ID of the charging pile during configuration, so that the system can be ensured to run more stably.
The invention can solve the problem that the new energy automobile grows up to cause insufficient load capacity of the power grid under the current energy crisis, reasonably distributes and charges the power grid to achieve the purpose of intelligent and orderly charging, and fully solves the defects of the current scheme, so that the system is more suitable for the current application scene.
The above embodiments are merely exemplary illustrations of the present invention, and are not intended to limit the present invention. Further steps not described in detail belong to technical content well known to the person skilled in the art. Corresponding changes and modifications within the spirit of the invention are also within the scope of the invention.
Claims (13)
1. The utility model provides an exchange orderly charging system of stake intelligence, its characterized in that can be in operation under two kinds of mode of off-grid and networking, including cloud platform, charge controller (MCU), communication processing unit (TCU), network communication module, LAN1, LAN2 adopts hand in hand series networking mode to realize when needing internal networking, the series connection networking mode specifically do: the master LAN2 is connected to the slave 1 LAN1, the slave 1 LAN2 is connected to the slave 2 LAN1, and the slave N-1 LAN2 is connected to the slave N LAN 1.
2. The intelligent and orderly charging system for alternating-current piles according to claim 1, wherein the network communication module is GPRS, WIFI or LAN, and the internal networking connection mode is CAN or RS 485.
3. The intelligent orderly charging system for alternating current piles according to claim 1, wherein in an off-grid state, the charging controller is implemented in a series networking mode, the charging controller is communicated with the communication processing unit, and the master communication processing unit is communicated with all slave communication processing units.
4. The intelligent orderly charging system of alternating current piles according to claim 1, wherein in an ethernet networking state, internal data interaction is realized through a serial networking mode, network communication is performed through a host, the charging controller communicates with the communication processing unit, and the host communication processing unit communicates with all slave communication processing units and the cloud platform at the same time.
5. The intelligent and orderly alternating-current pile charging system according to claim 1, wherein each charging pile is independently connected with the cloud platform in a GPRS or WFIF networking state, the charging controller is communicated with the communication processing unit, and the communication processing unit is communicated with the cloud platform.
6. The utility model provides an exchange stake intelligence orderly charging method which characterized in that can operate under two kinds of mode of operation of off-grid and networking, includes:
when the charging pile is constructed and installed, relevant operation parameters such as an internal networking ID, a networking mode, a cloud platform IP address, a cloud platform port number, a WIFI account number and a WIFI password are configured through an upper computer; configuring a network working mode of a charging pile;
uploading real-time data of all charging piles in the same planning area to a host or a cloud platform;
the method comprises the steps that a host or a cloud platform is combined with the charging power of a pile body currently being charged, and the maximum allowable output power of the pile body currently being charged is set;
calculating the current residual load capacity by combining the charging power of the pile body in the current charging process and the total load capacity of the power grid;
adjusting the current charging strategy according to the current residual load capacity and the priority mode of the queued charging users;
the charging strategy comprises: grading the current residual load capacity and the maximum allowable output power, wherein when the current residual load capacity is half of the previous-stage load capacity, the maximum allowable output power controlled by a charging pile before starting charging is half of the previous-stage maximum allowable output power, and when the maximum allowable charging power is smaller than the standard of the relevant charging pile, the charging is not allowed, and a queuing charging mode is entered;
in the off-network mode, when the host fails and cannot work continuously, the charging pile with higher priority is switched from the slave mode to the host mode control system, and the priority is determined by the internal networking ID of the charging pile during configuration.
7. The intelligent and orderly charging method for alternating current piles as claimed in claim 6, wherein the priority mode for queuing charging users comprises member levels and charging rules, and the charging rules comprise charging habits of the users, reserved time periods of the users and the like.
8. The intelligent orderly charging method for alternating-current piles according to claim 6, wherein the configuration of the network working mode of the charging pile comprises that in an offline mode, pile internal networking ID and a default master-slave mode need to be configured, and the orderly intelligent charging strategy and the total load capacity of a power grid under offline operation control the total quantity of offline networking piles to prevent system operation breakdown; in the Ethernet mode, an internal networking ID and a master-slave mode need to be configured, wherein the master-slave mode cannot be changed, and the IP and the port number of the cloud platform; in the GPRS/WIFI mode, only the IP and the port number of the cloud platform need to be configured.
9. An intelligent orderly charging method for an alternating current pile according to claim 6, wherein the host or the cloud platform sets the maximum allowable output power of the pile currently being charged in combination with the charging power of the pile currently being charged comprises: and if the charging of the charging pile is judged to be stable, the charging power is set to be the maximum allowable charging power when the charging pile is stable.
10. The utility model provides a circuit that exchanges stake intelligence and charge in order, can operate under two kinds of mode of off-network and networking, includes cloud platform, charge controller (MCU), communication processing unit (TCU), ethernet network communication module, LAN1 and LAN2, wherein
The charging controller (MCU) is connected with the communication processing unit (TCU);
the communication processing unit (TCU) is respectively connected with the Ethernet network communication module and the LAN 2;
LAN2 is connected to LAN1 through switch K2;
the LAN1 is connected to the ethernet chip through a switch K1;
the switch K1 comprises a master switch K1 and a slave switch K1, and the switch K2 comprises a master switch K2 and a slave switch K2.
11. The intelligent and orderly charging circuit of an alternating current pile as claimed in claim 10, wherein the communication processing unit is a high-frequency processing chip and is provided with a storage chip.
12. An ac stub intelligent sequenced charging circuit as claimed in claim 10 wherein the ethernet network communication module is a gigabit ethernet chip.
13. The circuit for intelligent orderly charging of ac stubs of claim 10, wherein in off-grid mode, switches K1 and K2 of the master are both open, switches K1 of the slave are open, and switches K2 are closed; in the ethernet mode, the switch K1 of the master is closed and the switch K2 is opened, and the switch K1 of the slave is opened and the switch K2 is closed.
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