CN112072700A - Energy conversion system of electric automobile V2X - Google Patents

Energy conversion system of electric automobile V2X Download PDF

Info

Publication number
CN112072700A
CN112072700A CN202010928131.1A CN202010928131A CN112072700A CN 112072700 A CN112072700 A CN 112072700A CN 202010928131 A CN202010928131 A CN 202010928131A CN 112072700 A CN112072700 A CN 112072700A
Authority
CN
China
Prior art keywords
power grid
energy conversion
electric
mode
power supply
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010928131.1A
Other languages
Chinese (zh)
Inventor
周世濂
陈勇
朱培坤
陈章勇
李龙芳
贲树俊
顾乡
张颖
李楠
宗强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nantong Electric Power Design Institute Co ltd
University of Electronic Science and Technology of China
Original Assignee
Nantong Electric Power Design Institute Co ltd
University of Electronic Science and Technology of China
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nantong Electric Power Design Institute Co ltd, University of Electronic Science and Technology of China filed Critical Nantong Electric Power Design Institute Co ltd
Priority to CN202010928131.1A priority Critical patent/CN112072700A/en
Publication of CN112072700A publication Critical patent/CN112072700A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • H02J3/381—Dispersed generators
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • 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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • 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
    • H02J3/144—Demand-response operation of the power transmission or distribution network
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
    • 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
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • 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
    • 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
    • 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
    • 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
    • Y02T90/14—Plug-in electric vehicles
    • 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
    • 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]
    • 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]
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention discloses an energy conversion system of an electric vehicle V2X, which comprises a cloud, a battery management system, a power grid regulation and control system, a power grid, an electric vehicle battery, an energy conversion module, a mode converter, a power grid interface and an electric appliance interface. The system has two working modes: the system comprises a charging mode and a power supply mode, wherein when the system works in the charging mode of the electric automobile, a mode converter is in the charging mode, and alternating current input by a power grid interface is converted into proper direct current through an energy conversion module to charge the electric automobile; when the system works in an electric automobile power supply mode, the mode converter is in a power supply mode, the power supply mode comprises electric automobile grid connection and electric appliance supply, at the moment, an electric automobile battery is used as a power supply and is converted into alternating current meeting requirements through the energy conversion module, when the electric automobile battery is connected to the power grid, the power grid regulation and control system controls the mode converter to be connected to the power grid through the power grid interface through the cloud scheduling battery management system, and when the electric automobile battery is supplied to the electric appliance, the alternating current is supplied.

Description

Energy conversion system of electric automobile V2X
Technical Field
The invention belongs to the technical field of energy conversion systems, and particularly relates to an energy conversion system of an electric automobile V2X.
Background
With the continuous development of global economy, people's physical living conditions are improved, and the environmental protection problem of air is also paid more and more attention, wherein the exhaust emission of fuel automobiles is one of the main pollution sources of air pollution, so that the strategy of replacing the traditional fuel automobiles by electric automobiles is developed in various countries in the world.
Taking china as an example, the sales volume of electric automobiles in china in 2017 is 57.9 thousands, which accounts for 21% of the sales volume of electric automobiles in the world. However, the electric automobile needs to replace the fuel automobile really and needs to walk for a long time, and the main problems are that the electric quantity carried by the electric automobile is too small, and the maximum driving distance is too small; the problem of charging electric vehicles has been a headache. At present, the main charging mode is that an electric automobile charging station charges, an electric automobile battery is replaced, the cost of electric automobile charging station construction is high, the utilization rate is not ideal, the charging station is difficult to find, and the bottleneck of electric automobile development is always restricted by some problems such as occupation of urban valuable land resources.
Therefore, the charger of the electric automobile is integrated in the electric automobile, each electric automobile is provided with a special adapter, and the electric automobile can be charged only in a place with commercial power. The technology of V2G and the technology of V2H can be developed for families by utilizing the storage effect of the battery of the electric automobile on the electric quantity.
In addition, the V2G technology is the same principle as the V2H technology, and is to invert the dc power of the electric vehicle into the standard commercial power and then to be connected to the grid or supply the commercial power to the home, if the bidirectional inversion module is used to effectively combine the electric vehicle charger with the three technologies of V2G and V2H, thereby reducing the cost investment.
Moreover, the electric quantity storage function of the electric automobile battery is utilized, the charging and grid connection of the electric automobile on the grid are intelligently scheduled for the power grid regulation and control system of the national power grid, the peak clipping and valley filling functions can be realized on the power grid, and the additional investment of the national power grid on the construction of an energy storage power station can be reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing an energy conversion system of an electric automobile V2X, and aims at home users to realize the triple functions of charging, grid connection and supplying electric appliances of the electric automobile.
In order to solve the technical problem, the invention provides an energy conversion system of an electric vehicle V2X, which comprises a cloud, a battery management system, a power grid regulation and control system, a power grid, an electric vehicle battery, an energy conversion module, a mode converter, a power grid interface and an electrical appliance interface, wherein the cloud is connected with the battery management system;
the power grid interface and the electrical appliance interface are connected with the energy conversion module through the mode converter; the mode converter controls the power grid interface and the electrical appliance interface to be connected with the energy conversion module so as to determine a charging mode or a power supply mode; the energy conversion module is directly connected with a battery of the electric automobile; the battery management system is used for directly managing and controlling the operation of the batteries of the electric automobiles, the energy conversion module and the mode converter, and the power grid regulation and control system is directly connected with a power grid and indirectly connected with the battery management systems of the electric automobiles through a cloud end;
when the energy conversion system of the V2X works in a charging mode of the electric automobile, the mode converter is in the charging mode, and alternating current input by a power grid interface is converted into suitable direct current through the energy conversion module to charge the electric automobile;
when the energy conversion system of V2X works as the power supply mode of the electric automobile, the mode converter is in the power supply mode, the power supply mode comprises that the electric automobile is connected to the power grid and supplies power to electric appliances, at the moment, the battery of the electric automobile is used as a power supply and is converted into alternating current meeting requirements through the energy conversion module, when the electric automobile is connected to the power grid, the power grid regulation and control system controls the mode converter to be connected to the power grid through a power grid interface through the cloud dispatching battery management system, and when the electric appliances are supplied, the.
The mode converter can be used for simultaneously carrying out grid connection of the electric vehicle and supply of electric appliances when working in a power supply mode, the electric vehicle is controlled by the power grid dispatching system through the cloud dispatching battery management system, and output can be supplied all the time when working in the power supply mode as long as the safety threshold of the electric vehicle battery power supply is not reached.
In a preferred embodiment: the cloud end is mainly used for transmitting a scheduling command of the power grid scheduling system to the battery management system and real-time information of the electric vehicle battery fed back by the battery management system, and can store the real-time information of the electric vehicle battery fed back by the battery management system on line.
In a preferred embodiment: the battery management system is a central control unit, is used as a control bridge of the electric automobile and the power grid regulation and control system, is used for receiving a command of the power grid regulation and control system, sending a command for controlling the energy conversion module to convert the command into a power supply meeting the requirements of the electric automobile in charging, supplying power to electric appliances and grid connection, collecting real-time information of the electric automobile battery, and uploading the real-time information to the cloud.
In a preferred embodiment: the energy conversion module comprises: the system comprises an LC filter, a bidirectional inverter and a bidirectional direct current chopper, and is used for converting the mode converter into a proper power supply to charge, grid-connect or supply to electric appliances when the mode converter works in a charging mode or a grid-connected mode.
In a preferred embodiment: the power grid regulation and control system is an overall coordination system, calculates the real-time peak-valley condition of the power grid, and intelligently sends out a command to schedule the power supply of the electric vehicle on the grid to charge or grid-connected according to the collected real-time power grid information big data to carry out peak clipping and valley filling on the power grid.
The purpose of the invention is realized as follows:
the energy conversion system of the electric vehicle V2X comprises a cloud, a battery management system, a power grid regulation and control system, a power grid, an electric vehicle battery, an energy conversion module, a mode converter, a power grid interface and an electric appliance interface. The system has two working modes: the system comprises a charging mode and a power supply mode, wherein when the system works in the charging mode of the electric automobile, a mode converter is in the charging mode, and alternating current input by a power grid interface is converted into proper direct current through an energy conversion module to charge the electric automobile; when the system works in an electric automobile power supply mode, the mode converter is in a power supply mode, the power supply mode comprises electric automobile grid connection and electric appliance supply, at the moment, an electric automobile battery is used as a power supply and is converted into alternating current meeting requirements through the energy conversion module, when the electric automobile battery is connected to the power grid, the power grid regulation and control system controls the mode converter to be connected to the power grid through the power grid interface through the cloud scheduling battery management system, and when the electric automobile battery is supplied to the electric appliance, the alternating current is supplied.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
1. the three functions of electric automobile power supply grid connection, electric automobile charging and electric automobile power supply electric appliance supply are realized, and the problems of common household automobile grid connection, automobile charging and emergency automobile power consumption are solved. The development of novel multipurpose electric vehicles and the construction of smart power grids are promoted.
2. The intelligent regulation and control of the power grid regulation and control system are realized, and the functions of peak clipping and valley filling are effectively realized by controlling the charging and grid connection of the electric automobile on the grid in real time.
3. The invention effectively combines the charging module, the grid-connected module and the power supply module at the automobile end, realizes direct household power charging and grid connection, can be directly supplied to various electric appliances, and is simple, convenient and quick to use.
4. The invention adds the electrical appliance interface, and can conveniently and rapidly meet the requirement of emergency electricity utilization in the home and outdoor of the ordinary user.
5. The multi-utilization of the power supply of the electric automobile is realized, the utilization rate of the power supply is improved, the functions of load transfer, load adjustment and rotation of the standby unit are effectively achieved, and the investment on the rotation standby unit can be reduced.
Drawings
FIG. 1 is a flow chart of one embodiment of a method for multi-objective optimized electric vehicle charging station planning in accordance with the present invention;
FIG. 2 is a flow chart of determining the average weight and demand margin value of each objective function by the entropy method in the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided in order to better understand the present invention for those skilled in the art with reference to the accompanying drawings. It is to be expressly noted that in the following description, a detailed description of known functions and designs will be omitted when it may obscure the subject matter of the present invention.
Example (b):
referring to fig. 1, an energy conversion system of an electric vehicle V2X includes a cloud 1, a battery management system 2, a power grid regulation and control system 3, a power grid 4, an electric vehicle battery 5, an energy conversion module 6, a mode converter 7, a power grid interface 8, and an electrical appliance interface 9;
the power grid interface 8 and the electrical appliance interface 9 are connected with the energy conversion module 6 through the mode converter 7; the mode converter 7 controls the power grid interface 8 and the electrical appliance interface 9 to be connected with the energy conversion module 6 so as to determine a charging mode or a power supply mode; the energy conversion module 6 is directly connected with the electric vehicle battery 5; the battery management system 2 is used for directly managing and controlling the operation of each unit, and the power grid regulation and control system 3 is directly connected with the power grid 4 and indirectly connected with the battery management systems 2 of each electric vehicle through the cloud 1;
when the energy conversion system of the V2X works in a charging mode of the electric automobile, the mode converter 7 is in the charging mode, and alternating current input by the power grid interface 8 is converted into appropriate direct current through the energy conversion module 6 to charge the electric automobile;
when the energy conversion system of V2X work as the power supply mode of electric automobile, mode converter 7 is the power supply mode, the power supply mode includes that electric automobile is incorporated into the power networks and supplies with electrical apparatus, electric automobile battery 5 converts the alternating current that satisfies the requirement into through energy conversion module 6 as the power at this moment, when being incorporated into the power networks, electric wire netting regulation and control system 3 dispatches battery management system 2 through cloud 1 and controls mode converter 7 and is incorporated into the power networks through electric wire netting interface 8, when supplying with electrical apparatus, the alternating current supplies with electrical apparatus through electrical apparatus interface 9 and uses.
The mode converter 7 can be used for simultaneously carrying out electric vehicle grid connection and supplying electric appliances when working in a power supply mode, the electric vehicle grid connection is controlled by the electric vehicle grid connection power grid regulation and control system 3 through the cloud end 1 dispatching battery management system 2, and output can be supplied all the time when working in the power supply mode as long as the safety threshold of electric vehicle battery power supply is not reached.
The cloud end 1 is mainly used for transmitting a scheduling command of the power grid regulation and control system 3 to the battery management system 2 and real-time information of the electric vehicle battery 5 fed back by the battery management system 2, and can store the real-time information of the electric vehicle battery 5 fed back by the battery management system 2 on line.
The battery management system 2 is a central control unit, is used as a control bridge between the electric vehicle and the power grid regulation and control system 3, and is used for receiving a command of the power grid regulation and control system 3, sending a command for controlling the energy conversion module 6 to convert the command into a power supply meeting the requirements of the electric vehicle on charging, supplying electric appliances and grid connection, collecting real-time information of the electric vehicle battery 5, and uploading the real-time information to the cloud 1.
The energy conversion module 6 comprises: and the LC filter, the bidirectional inverter and the bidirectional direct current chopper are used for converting the mode converter 7 into a proper power supply to charge, grid-connect or supply power to electric appliances when the mode converter works in a charging mode or a grid-connected mode.
The power grid regulation and control system 3 is an overall coordination system, calculates the real-time peak-valley condition of the power grid 4, and intelligently sends out a command to schedule the power supply of the on-grid electric vehicle to charge or grid-connected according to the collected real-time power grid 4 information big data to carry out peak clipping and valley filling on the power grid.
By adopting the technical scheme, the electric automobile becomes more powerful and humanized, the electric automobile can realize intelligent grid-connected peak clipping and valley filling, supply electric appliances and emergency electricity by adopting the energy conversion system, the power supply burden is reduced for a national power grid to a certain extent, and a new green and environment-friendly power supply way is added for common household electricity and emergency electricity.
With further reference to fig. 2, in one embodiment, a workflow of an energy conversion system of an electric vehicle V2X includes the steps of:
s01: and connecting the power grid interface 8 with the power grid 4, and connecting the electrical appliance interface 9 with an electrical appliance.
S02: is charging mode according to user's demand? If the charging mode is selected, jumping to step S03; if not, go to step S07. The electric automobile can work in a charging mode and a power supply mode according to the requirements of users, the power supply mode comprises electric automobile grid connection and electric appliance supply, and as long as the electric automobile power grid interface 8 is connected with the power grid 4, the battery management system 2 of the electric automobile can be scheduled to work in the grid connection mode according to the power grid regulation and control system 3.
S03: this step is controlled by the battery management system 2 to automatically switch to the charging mode by the mode switch 7 according to the user's needs.
S04: when the electric automobile is in a charging mode, the battery management system controls the energy conversion module 6 to convert the direct current voltage and the direct current suitable for charging the electric automobile, and meanwhile, the battery management system 2 calculates the charging electric quantity of the battery in real time.
S05: the battery management system 2 determines whether or not the battery charge capacity of the electric vehicle is 100%? If not, jumping to the step S04 to continue the real-time calculation; if the battery charge capacity is 100%, go to step S06.
S06: the battery management system 2 sends a signal to close the mode converter 7, the battery of the electric automobile is cut off from being connected with the outside, and charging is finished.
S07: is the electric vehicle operating in the power supply mode according to the user's needs? If the power supply mode is the power supply mode, the step S09 is skipped, and if the power supply mode is not the power supply mode, the step S08 is skipped.
S08: the electric vehicle is not charged or powered, the mode converter 7 is disconnected at this time, and the battery of the electric vehicle is not in contact with the outside.
S09: the electric vehicle works in a power supply mode, and the battery management system 2 controls the mode converter 7 to work in the power supply mode.
S10: the electric vehicle power grid connection is controlled by the electric vehicle battery management system 2, wherein the electric vehicle power grid connection is realized by the electric vehicle power grid regulation and control system 3 sending dispatching information to the battery management system 2 of the electric vehicle through the cloud end 1, and the grid connection is realized by the electric vehicle battery management system 2 controlling the energy conversion module 6 to convert the alternating current into the appropriate alternating current and directly connecting the alternating current through the electric network interface 8.
S11: and (4) grid connection or supply to electric appliances. The power supply mode comprises the power supply grid connection of the electric automobile and the use of the power supply for the electric appliance, and the power supply of the electric automobile is supplied to the electric appliance for use through the electric appliance interface 9. The electric automobile can be simultaneously connected with the power supply of the electric appliances.
S12: in the power mode, the battery has a power supply safety threshold. And if the power supply safety threshold is lower than the power supply safety threshold, jumping to step S13, and if the power supply safety threshold is higher than the power supply safety threshold, jumping to step S11.
S13: the battery management system 2 sends a signal to turn off the mode converter 7, cut off the connection between the battery and the outside, and the power supply is finished.
Although illustrative embodiments of the present invention have been described above to facilitate the understanding of the present invention by those skilled in the art, it should be understood that the present invention is not limited to the scope of the embodiments, and various changes may be made apparent to those skilled in the art as long as they are within the spirit and scope of the present invention as defined and defined by the appended claims, and all matters of the invention which utilize the inventive concepts are protected.

Claims (6)

1. An energy conversion system of an electric vehicle V2X, characterized in that: the system comprises a cloud, a battery management system, a power grid regulation and control system, a power grid, an electric vehicle battery, an energy conversion module, a mode converter, a power grid interface and an electric appliance interface;
the power grid interface and the electrical appliance interface are connected with the energy conversion module through the mode converter; the mode converter controls the power grid interface and the electrical appliance interface to be connected with the energy conversion module so as to determine a charging mode or a power supply mode; the energy conversion module is directly connected with a battery of the electric automobile; the battery management system is used for directly managing and controlling the operation of the batteries of the electric automobiles, the energy conversion module and the mode converter, and the power grid regulation and control system is directly connected with a power grid and indirectly connected with the battery management systems of the electric automobiles through a cloud end;
when the energy conversion system of the V2X works in a charging mode of the electric automobile, the mode converter is in the charging mode, and alternating current input by a power grid interface is converted into suitable direct current through the energy conversion module to charge the electric automobile;
when the energy conversion system of V2X works as the power supply mode of the electric automobile, the mode converter is in the power supply mode, the power supply mode comprises that the electric automobile is connected to the power grid and supplies power to electric appliances, at the moment, the battery of the electric automobile is used as a power supply and is converted into alternating current meeting requirements through the energy conversion module, when the electric automobile is connected to the power grid, the power grid regulation and control system controls the mode converter to be connected to the power grid through a power grid interface through the cloud dispatching battery management system, and when the electric appliances are supplied, the.
2. The energy conversion system of the electric vehicle V2X of claim 1, wherein: the mode converter can be used for simultaneously carrying out grid connection of the electric vehicle and supply of electric appliances when working in a power supply mode, the electric vehicle is controlled by the power grid dispatching system through the cloud dispatching battery management system, and output can be supplied all the time when working in the power supply mode as long as the safety threshold of the electric vehicle battery power supply is not reached.
3. The energy conversion system of the electric vehicle V2X of claim 1, wherein: the cloud end is mainly used for transmitting a scheduling command of the power grid scheduling system to the battery management system and real-time information of the electric vehicle battery fed back by the battery management system, and can store the real-time information of the electric vehicle battery fed back by the battery management system on line.
4. The energy conversion system of the electric vehicle V2X of claim 1, wherein: the battery management system is a central control unit, is used as a control bridge of the electric automobile and the power grid regulation and control system, is used for receiving a command of the power grid regulation and control system, sending a command for controlling the energy conversion module to convert the command into a power supply meeting the requirements of the electric automobile in charging, supplying power to electric appliances and grid connection, collecting real-time information of the electric automobile battery, and uploading the real-time information to the cloud.
5. The energy conversion system of the electric vehicle V2X of claim 1, wherein: the energy conversion module comprises: the system comprises an LC filter, a bidirectional inverter and a bidirectional direct current chopper, and is used for converting the mode converter into a proper power supply to charge, grid-connect or supply to electric appliances when the mode converter works in a charging mode or a grid-connected mode.
6. The energy conversion system of the electric vehicle V2X of claim 1, wherein: the power grid regulation and control system is an overall coordination system, calculates the real-time peak-valley condition of the power grid, and intelligently sends out a command to schedule the power supply of the electric vehicle on the grid to charge or grid-connected according to the collected real-time power grid information big data to carry out peak clipping and valley filling on the power grid.
CN202010928131.1A 2020-09-07 2020-09-07 Energy conversion system of electric automobile V2X Pending CN112072700A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010928131.1A CN112072700A (en) 2020-09-07 2020-09-07 Energy conversion system of electric automobile V2X

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010928131.1A CN112072700A (en) 2020-09-07 2020-09-07 Energy conversion system of electric automobile V2X

Publications (1)

Publication Number Publication Date
CN112072700A true CN112072700A (en) 2020-12-11

Family

ID=73663797

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010928131.1A Pending CN112072700A (en) 2020-09-07 2020-09-07 Energy conversion system of electric automobile V2X

Country Status (1)

Country Link
CN (1) CN112072700A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230070318A1 (en) * 2021-09-07 2023-03-09 Ford Global Technologies, Llc Vehicle electrical system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102025182A (en) * 2010-11-30 2011-04-20 梁一桥 Modular charging/discharging system of power battery pack of multifunctional electromobile

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102025182A (en) * 2010-11-30 2011-04-20 梁一桥 Modular charging/discharging system of power battery pack of multifunctional electromobile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230070318A1 (en) * 2021-09-07 2023-03-09 Ford Global Technologies, Llc Vehicle electrical system

Similar Documents

Publication Publication Date Title
CN109398133B (en) Electric automobile charging cluster and automatic power distribution system thereof
CN104753164B (en) A kind of V2G charging station
CN101436689B (en) Power grid load management for plug-in vehicles
Wi et al. Electric vehicle charging method for smart homes/buildings with a photovoltaic system
CN113306429B (en) Charging system and method for new energy automobile
CN102541010A (en) Monitoring system for electric automobile and control method thereof
CN112531760B (en) Light storage and charging integrated layered coordination control system and control strategy thereof
CN104659849A (en) Device, system and charging method of charging pile
CN110920458A (en) Method and device for charging reservation management of electric automobile
CN104241720A (en) Charge control method for electromobile direct-current rapid charging station in microgrid
CN102427239A (en) Charging and discharging system using electric automobile as mobile energy storage unit in power grid
CN205531469U (en) Chargeable bus station of dual supply
CN111231713A (en) Electric automobile charging and discharging system and control method
Han et al. Interactive charging strategy of electric vehicles connected in Smart Grids
CN114172242A (en) Bidirectional charging and discharging system and control method thereof
CN112072700A (en) Energy conversion system of electric automobile V2X
CN212304790U (en) Vehicle-mounted micro-grid with solar panel and power plant formed by polymerizing same
CN110707736B (en) Micro-grid operation method for intelligent community user demand side response
CN110758166A (en) Bidirectional management system for electric automobile charging pile
CN108039760B (en) Distributed intelligent charging system based on big data cloud platform remote management
CN102118042B (en) Charging station management system and method
CN111347916A (en) Charging and energy storage integrated battery replacement station
CN214045159U (en) Roof photovoltaic and micro-grid bidirectional power supply system for residential users
CN210111620U (en) Power supply system of stereo garage
CN112467856A (en) Wireless charging system and method with priority

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20201211

RJ01 Rejection of invention patent application after publication