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CN108327569B - Dynamic wireless charging method and device for electric vehicle, electronic equipment and storage medium - Google Patents

Dynamic wireless charging method and device for electric vehicle, electronic equipment and storage medium Download PDF

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Publication number
CN108327569B
CN108327569B CN201810300606.5A CN201810300606A CN108327569B CN 108327569 B CN108327569 B CN 108327569B CN 201810300606 A CN201810300606 A CN 201810300606A CN 108327569 B CN108327569 B CN 108327569B
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charging
current
determining
electric vehicle
renewable energy
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CN108327569A (en
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牟晓琳
张莹吉
孙洪剑
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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
    • B60L53/64—Optimising energy costs, e.g. responding to electricity rates
    • 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
    • B60L53/10—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 characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • 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
    • B60L53/50—Charging stations characterised by energy-storage or power-generation means
    • B60L53/51—Photovoltaic means
    • 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
    • B60L53/50—Charging stations characterised by energy-storage or power-generation means
    • B60L53/52—Wind-driven 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
    • 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
    • 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
    • B60L53/63—Monitoring or controlling charging stations in response to network capacity
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • 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
    • Y02E60/10—Energy storage using 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
    • Y02T10/70—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
    • Y02T90/12—Electric charging stations
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The embodiment of the invention provides a dynamic wireless charging method and device for an electric vehicle, electronic equipment and a storage medium, wherein the method comprises the following steps: acquiring current power and current traffic flow generated by a renewable energy system; determining the current power supply quantity of the renewable energy system according to the current power, and determining the current required charging quantity according to the current traffic flow; determining the current electricity price; transmitting the current electricity price to each electric vehicle entering a communication area so that each electric vehicle determines whether to transmit a charging request; determining a to-be-charged amount according to electric quantity information of each electric vehicle included in each received charging request, and determining a current charging mode according to the size relationship between the to-be-charged amount and the power supply amount; wherein the current charging mode comprises: charging only through the renewable energy system, or charging through both the renewable energy system and a public power grid. The embodiment of the invention can improve the utilization rate of renewable energy.

Description

Dynamic wireless charging method and device for electric vehicle, electronic equipment and storage medium
Technical Field
The invention relates to the technical field of charging, in particular to a dynamic wireless charging method and device for an electric vehicle, electronic equipment and a storage medium.
background
Currently, 126 ten thousand battery electric vehicles and plug-in hybrid electric vehicles are predicted globally. This figure accounts for around 8% of vehicles worldwide. It is seen that electric vehicles have become a trend to replace fuel-powered vehicles.
Although electric vehicles have been widely accepted in many countries, charging technology remains a significant challenge for the wider application of electric vehicles. First, consumer anxiety about the range of electric vehicle usage (e.g., lack of charging infrastructure, high purchase price, battery range, etc.) (drivers fear that battery energy will be depleted between charging stations); secondly, during peak periods of power demand, governments are concerned about increased power demand and carbon emissions from charging large numbers of electric vehicles.
in view of the above, and the factors such as climate change, air pollution, and shortage of non-renewable energy, a technology for generating electricity to charge an electric vehicle using renewable energy has been receiving attention.
However, the use of renewable energy sources is subject to a number of conditions, for example wind energy, solar energy, etc. are subject to weather. These conditions, in turn, can have an impact on the renewable energy sources charging the electric vehicle. Taking wind energy as an example, when the wind power is high, more wind energy is generated, and more electric vehicles can be charged, but if the demand is low, the wind energy is excessive; when the wind power is small, the generated wind energy is less, and only a few electric vehicles can be charged, but if the demand is large, the wind energy is insufficient.
Therefore, the prior art has the defect of low utilization rate in the application of charging the electric vehicle by using renewable energy.
disclosure of Invention
the embodiment of the invention aims to provide a dynamic wireless charging method and device for an electric vehicle, electronic equipment and a storage medium, so as to improve the utilization rate of renewable energy.
in order to achieve the above object, in a first aspect, the following technical solutions are provided:
A method of wirelessly charging an electric vehicle, the method comprising:
Acquiring current power and current traffic flow generated by a renewable energy system;
determining the current power supply quantity of the renewable energy system according to the current power, and determining the current required charging quantity according to the current traffic flow;
determining the current electricity price according to the size relationship between the power supply amount and the charging amount;
Transmitting the current power rates to each electric vehicle entering a communication area, so that each electric vehicle determines whether to transmit a charging request based on the current power rates; the charging request sent by any electric vehicle comprises electric quantity information of the electric vehicle;
Determining a to-be-charged amount according to electric quantity information of each electric vehicle included in each received charging request, and determining a current charging mode according to the size relationship between the to-be-charged amount and the power supply amount; wherein the current charging mode comprises: charging only through the renewable energy system, or charging through both the renewable energy system and a public power grid.
Optionally, the determining a current power supply amount of the renewable energy system according to the current power and determining a current required charging amount according to the current traffic flow includes:
determining a first number of charging pads currently available by the renewable energy system according to the current power; determining the current traffic flow grade according to the current traffic flow, and determining the quantity of second charging pads required currently according to the current traffic flow grade;
correspondingly, the determining the current electricity price according to the magnitude relation between the power supply amount and the charging amount comprises:
comparing the first charging pad number with the second charging pad number, and determining the current price of electricity according to the comparison result;
The determining a to-be-charged amount according to the electric quantity information of each electric vehicle included in each received charging request, and determining a current charging mode according to the magnitude relation between the to-be-charged amount and the power supply amount includes:
Determining the number of third charging pads according to the electric quantity information of each electric vehicle included in each received charging request; and determining the current charging mode according to the magnitude relation between the first charging pad quantity and the third charging pad quantity.
Optionally, the determining, according to the current power, a first number of charging pads currently available by the renewable energy system includes:
Acquiring the maximum power corresponding to the renewable energy system and the total number of configured charging pads;
and calculating the ratio of the current power to the maximum power, and multiplying the ratio by the total number of the charging pads to obtain the first number of the charging pads which can be provided by the renewable energy system currently.
optionally, the comparing the first charging pad number and the second charging pad number, and determining the current electricity price according to the comparison result includes:
Calculating a difference between the first number of charging pads and the second number of charging pads;
when the difference value is larger than a preset first threshold value, determining that the current electricity price is a preset low electricity price;
When the difference value is smaller than the preset first threshold value and larger than a preset second threshold value, determining that the current electricity price is a preset middle electricity price; the preset second threshold is smaller than the preset first threshold;
And when the difference value is smaller than the preset second threshold value, determining that the current electricity price is a preset high electricity price.
optionally, the determining a current charging manner according to a magnitude relationship between the first charging pad number and the third charging pad number includes:
determining that the current charging mode is charging only through the renewable energy system when the first charging pad number is greater than or equal to the third charging pad number;
when the first charging pad number is smaller than the third charging pad number, determining that the current charging mode is common charging through the renewable energy system and the public power grid.
optionally, the method further includes:
Determining the larger value of the first charging pad number and the third charging pad number as the number of charging pads to be started;
selecting an identifier of the charging pad to be started according to the number of the charging pads to be started and the total number of the configured charging pads; wherein the intervals between any two adjacent charging pads in the selected charging pads are equal.
Optionally, after selecting the identifier of the charging pad to be turned on, the method further includes:
And when the electric vehicle is detected to run to the sensing area of any selected charging pad, the charging pad is started.
In a second aspect, an embodiment of the present invention provides an electric vehicle wireless charging apparatus, including:
the acquisition module is used for acquiring the current power and the current traffic flow generated by the renewable energy system;
The first determining module is used for determining the current power supply quantity of the renewable energy system according to the current power and determining the current required charging quantity according to the current traffic flow;
the second determination module is used for determining the current electricity price according to the magnitude relation between the power supply quantity and the charging quantity;
The sending module is used for sending the current electricity price to each electric vehicle entering a communication area so that each electric vehicle can determine whether to send a charging request or not based on the current electricity price; the charging request sent by any electric vehicle comprises electric quantity information of the electric vehicle;
the third determining module is used for determining a to-be-charged amount according to the electric quantity information of each electric vehicle included in each received charging request, and determining a current charging mode according to the magnitude relation between the to-be-charged amount and the power supply amount; wherein the current charging mode comprises: charging only through the renewable energy system, or charging through both the renewable energy system and a public power grid.
In a third aspect, an embodiment of the present invention provides an electronic device, including a processor, a communication interface, a memory, and a communication bus, where the processor, the communication interface, and the memory complete mutual communication through the communication bus;
The memory is used for storing a computer program;
the processor is configured to implement the method steps according to the first aspect when executing the program stored in the memory.
In a fourth aspect, the present invention provides a computer-readable storage medium, in which a computer program is stored, and the computer program, when executed by a processor, implements the method steps as described in the first aspect.
the embodiment of the invention provides a dynamic wireless charging method and device for an electric vehicle, electronic equipment and a storage medium, wherein the method comprises the following steps: acquiring current power and current traffic flow generated by a renewable energy system; determining the current power supply quantity of the renewable energy system according to the current power, and determining the current required charging quantity according to the current traffic flow; determining the current electricity price according to the size relationship between the power supply amount and the charging amount; transmitting the current power rates to each electric vehicle entering a communication area, so that each electric vehicle determines whether to transmit a charging request based on the current power rates; the charging request sent by any electric vehicle comprises electric quantity information of the electric vehicle; determining a to-be-charged amount according to electric quantity information of each electric vehicle included in each received charging request, and determining a current charging mode according to the size relationship between the to-be-charged amount and the power supply amount; wherein the current charging mode comprises: charging only through the renewable energy system, or charging through both the renewable energy system and a public power grid.
By adopting the technical scheme, the embodiment of the invention determines the current electricity price based on the current power generated by the renewable energy system and the current traffic flow; then, sending the current price of electricity to the electric vehicle; and finally, according to the charging request fed back by the electric vehicle, determining whether the electric vehicle is charged by using the renewable energy system or the electric vehicle is charged by using the renewable energy system and a public power grid together, so that the utilization rate of renewable energy can be improved. Taking wind energy as an example, when the wind power is high, more wind energy is generated, and the electric vehicle can be charged only through the renewable energy system; when the wind power is low, the generated wind energy is less, and the electric vehicle can be charged by the renewable energy system and the public power grid at the same time, so that the utilization rate of renewable energy is improved while the electric vehicle is charged.
additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Of course, not all of the advantages described above need to be achieved at the same time in the practice of any one product or method of the invention.
Drawings
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a wireless charging method for an electric vehicle according to an embodiment of the present invention;
Fig. 2 is another flowchart of a wireless charging method for an electric vehicle according to an embodiment of the invention;
FIG. 3 is a schematic diagram of an application scenario according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a charging lane according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a wireless charging device for an electric vehicle according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of 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 any creative effort, shall fall within the protection scope of the present invention.
the present invention will be described in detail below with reference to specific examples.
Referring to fig. 1, a flow of a wireless charging method for an electric vehicle according to an embodiment of the present invention is shown, where the method includes the following steps:
s101, acquiring current power and current traffic flow generated by a renewable energy system;
The method provided by the embodiment of the invention can be applied to a wireless charging system, and particularly, the wireless charging system can be any system capable of realizing the wireless charging method of the electric vehicle. For example:
the wireless charging system may be a wireless charging server, comprising: a processor, a memory, a communication interface, and a bus; the processor, the memory and the communication interface are connected through a bus and complete mutual communication; the memory stores executable program code; the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory for performing the electric vehicle wireless charging method.
the wireless charging system may also be an application program for performing the wireless charging method of the electric vehicle when running.
the wireless charging system may also be a storage medium storing executable code for performing an electric vehicle wireless charging method.
In the embodiment of the invention, the wireless charging system can charge the electric vehicle through the renewable energy system and the public power grid. In addition, in order to improve the utilization rate of renewable energy, the wireless charging system may determine, based on the current power generated by the renewable energy system and the current traffic flow, that the current charging mode is charging only through the renewable energy system or charging through both the renewable energy system and a public power grid.
The renewable energy system may be, for example, a wind energy system, a solar energy system, or the like. For convenience of description, the embodiment of the present invention takes wind energy as an example to describe the wireless charging method for the electric vehicle according to the embodiment of the present invention.
In the embodiment of the invention, the wireless charging system can obtain the current power generated by the renewable energy system. For example, the wireless charging system may calculate the current power P generated by the renewable energy system according to the following formulawt：
Pwt＝m*P
Wherein m is the total number of the windmills corresponding to the renewable energy system, and P is the output power of a single windmill;
A is the swept area of the windmill, V is the current wind speed, Cpis the power coefficient.
the wireless charging system may also obtain a current traffic flow. For example, the wireless charging system may obtain the current traffic flow through any navigation software; or the current traffic flow is acquired through the urban traffic system, which is not limited in the embodiment of the invention.
S102, determining the current power supply quantity of the renewable energy system according to the current power, and determining the current required charging quantity according to the current traffic flow;
after the current power and the current traffic flow are obtained, the wireless charging system can determine the current power supply quantity of the renewable energy system according to the current power, namely the total electric quantity which can be currently generated by the renewable energy; and determining the currently required charging amount according to the current traffic flow, namely the current total electric quantity required to be charged by the electric vehicle.
For example, the wireless charging system may use an accumulated value of the current power generated by the renewable energy system in a unit time (e.g., 1 minute, 1 hour, etc.) as the current power supply amount of the renewable energy system. And taking the product of the current traffic flow and the power consumption of each electric vehicle in unit time as the current required charging amount.
s103, determining the current electricity price according to the magnitude relation between the power supply quantity and the charging quantity;
in the embodiment of the invention, a plurality of electricity prices can be preset to adjust the electricity prices according to actual conditions, so that the purpose of regulating and controlling the charging requirement of the electric vehicle is achieved.
for example, two electricity prices may be set in advance. When the power supply amount is greater than the charge amount, it indicates that the current renewable energy is sufficient, in which case the current electricity price may be determined to be a lower value to encourage the user to charge the electric vehicle; when the power supply amount is less than the charge amount, it indicates that the current renewable energy is insufficient, in which case the current electricity price may be determined to be a higher value to reduce the user's need to charge the electric vehicle.
S104, sending the current electricity price to each electric vehicle entering a communication area so that each electric vehicle can determine whether to send a charging request based on the current electricity price, wherein the charging request sent by any electric vehicle comprises the electric vehicle electric quantity information;
After determining the current electricity price, the wireless charging system may generate the current electricity price to the electric vehicle entering the communication area. For example, the current electricity price may be transmitted in a communication area in a broadcast manner through wireless communication, and as long as an electric vehicle entering the communication area receives the broadcast information, the current electricity price may be acquired.
after the electric vehicle receives the current electricity price, an electric vehicle driver can decide whether to charge or not according to the current electricity price and the current electric quantity information. For example, when the current electricity price is low, as long as the electric quantity of the electric vehicle is not full, the electric vehicle driver can select charging; when the current price of electricity is higher, as long as the electric vehicle has some surplus electric quantity, the electric vehicle driver can choose not to charge. After the electric vehicle driver decides to charge, the electric vehicle driver can send a charging request to the wireless charging system through the electric vehicle.
the electric quantity information of the electric vehicle can be the residual electric quantity of the electric vehicle or the used electric quantity of the electric vehicle, and the electric quantity information is reasonable.
s105, determining a to-be-charged amount according to the electric quantity information of each electric vehicle included in each received charging request, and determining a current charging mode according to the size relation between the to-be-charged amount and the power supply amount; wherein the current charging mode comprises: charging only through the renewable energy system, or charging through both the renewable energy system and a public power grid.
after receiving the charging requests sent by the electric vehicles, the wireless charging system can determine the amount to be charged, namely the total amount of charge required by all the electric vehicles, according to the electric quantity information of the electric vehicles included in the charging requests. Moreover, the current charging mode can be determined according to the relation between the amount to be charged and the amount of power supply; wherein, current charging mode includes: charging only through the renewable energy system, or charging through the renewable energy system and the public power grid together.
For example, when the charging amount is greater than the power supply amount, it indicates that the amount of power provided by the current renewable energy system is insufficient to charge all electric vehicles that need to be charged, in this case, it may be determined that the current charging mode is charging through the renewable energy system and the public power grid together to meet the charging requirements of all electric vehicles; when the charging amount is less than or equal to the power supply amount, it indicates that the electric quantity provided by the current renewable energy system is enough to charge all electric vehicles needing to be charged, and in this case, it may be determined that the current charging mode is charging only through the renewable energy system, so as to improve the utilization rate of the renewable energy system.
By adopting the technical scheme, the embodiment of the invention determines the current electricity price based on the current power generated by the renewable energy system and the current traffic flow; then, sending the current price of electricity to the electric vehicle; and finally, according to the charging request fed back by the electric vehicle, determining whether the electric vehicle is charged by using the renewable energy system or the electric vehicle is charged by using the renewable energy system and a public power grid together, so that the utilization rate of renewable energy can be improved. Taking wind energy as an example, when the wind power is high, more wind energy is generated, and the electric vehicle can be charged only through the renewable energy system; when the wind power is low, the generated wind energy is less, and the electric vehicle can be charged by the renewable energy system and the public power grid at the same time, so that the utilization rate of renewable energy is improved while the electric vehicle is charged.
as an implementation manner of the embodiment of the present invention, the electric vehicle may be charged through the charging pad. Specifically, the charging pad may be charged through the renewable energy system or the public power grid, and then the electric vehicle may be charged through the charging pad.
for example, when a unidirectional two-lane highway (one lane is a charging lane and one lane is a non-charging lane) design of 1Km is adopted, the length of each charging pad is 9m, and the distance between the charging pads is 1m, the charging highway can lay 100 charging pads in total.
As an implementation manner of the embodiment of the present invention, as shown in fig. 2, another flow of the wireless charging method for an electric vehicle according to the embodiment of the present invention is shown, and the method may include the following steps:
S201, acquiring current power and current traffic flow generated by a renewable energy system;
Step S201 is substantially the same as step S101 in the embodiment shown in fig. 1, and is not described herein again.
S202, determining the number of first charging pads which can be provided currently by the renewable energy system according to the current power; determining the current traffic flow grade according to the current traffic flow, and determining the quantity of second charging pads required currently according to the current traffic flow grade;
In this embodiment, after the current power and the current traffic flow are obtained, the wireless charging system may determine, according to the current power, the number of first charging pads that can be currently provided by the renewable energy system, that is, the number of charging pads that can be charged by the energy generated by the current renewable energy system.
for example, the maximum power corresponding to the renewable energy system, i.e. the sum of the rated power of all windmills, and the total number of configured charging pads may be obtained first. And then, the ratio of the current power to the maximum power can be calculated, and the ratio is multiplied by the total number of the charging pads to obtain the first number of the charging pads which can be provided by the renewable energy system currently.
The number of the first charging pads calculated by the above method may not be an integer. Alternatively, the first charge pad number M may be calculated by the following formula:
Wherein floor is a mathematical expression meaning rounding down; pwtFor the current power, PmAt maximum power, n is the total number of charging pads.
In the embodiment of the present invention, a plurality of traffic flow levels may be set in advance, and the number of charging mats corresponding to each traffic flow level may be set. The correspondence shown in the following table may be set as follows:
Real-time traffic flow N traffic flow rating Number of charging pads
N<a1 free flow 1.2a1
a1<N<a2 non-congestion 1.2a2
a2<N<a3 Light congestion 1.2a3
a3<N<a4 congestion 1.2a4
a4<N<a Severe congestion 1.2a
That is, the traffic flow may be divided into 5 levels: free flow, non-congestion, light congestion, congestion and severe congestion. And each grade corresponds to different real-time vehicle flow N and the number of charging pads.
For example, the following steps are carried out: for the charging section, the maximum traffic flow value of the section can be determined to be a according to the traffic history of the charging section. Then it can be set that: al < a2< a3< a4< a. The real-time traffic flow is N, if N < al, the number of charging pads that need to be turned on according to the traffic flow is 1.2 al (1.2 is here a safety factor); if a1< N < a2, the number of charging pads that need to be turned on is 1.2 a2, and so on.
In the embodiment of the present invention, after the current traffic flow N is determined, the traffic flow level corresponding to the current traffic flow and the number of the second charging mats required currently may be searched according to the correspondence relationship shown in the above table.
s203, comparing the number of the first charging pads with the number of the second charging pads, and determining the current electricity price according to the comparison result;
After determining the first number of charging pads currently available by the renewable energy system and the second number of charging pads currently needed, the wireless charging system may determine the current price of electricity according to the first number of charging pads and the second number of charging pads.
For example, three electricity prices may be preset: low electricity prices, medium electricity prices, and high electricity prices. When the current electricity price is determined, the wireless charging system can calculate the difference value between the first charging pad quantity and the second charging pad quantity; when the difference value is greater than a preset first threshold value (such as 5, 10, 20 and the like), determining that the current electricity price is a preset low electricity price; when the difference value is smaller than a preset first threshold value and larger than a preset second threshold value (such as 1, 2, 3 and the like), determining that the current electricity price is a preset middle electricity price; and when the difference value is smaller than a preset second threshold value, determining that the current electricity price is a preset high electricity price.
S204, sending the current electricity price to each electric vehicle entering a communication area so that each electric vehicle can determine whether to send a charging request or not based on the current electricity price; the charging request sent by any electric vehicle comprises electric quantity information of the electric vehicle;
step S204 is substantially the same as step S104 in the embodiment shown in fig. 1, and is not described herein again.
s205, determining the number of third charging pads according to the electric quantity information of each electric vehicle included in each received charging request; determining a current charging mode according to the magnitude relation between the number of the first charging pads and the number of the third charging pads; wherein the current charging mode comprises: charging only through the renewable energy system, or charging through both the renewable energy system and a public power grid.
After receiving the charging requests sent by the electric vehicles, the wireless charging system can determine the number of the third charging pads according to the electric quantity information of the electric vehicles included in the charging requests.
if the total required power of the electric vehicle is determined to be P according to the electric quantity information of each electric vehiclerthen, the third charging pad number M may be calculated according to the following formular：
Mr＝ceil(Pr/Pt)
ceil is of mathematical significance: pointing up to round, Ptthe nominal charging power for each charging pad.
when determining the current charging mode according to the magnitude relationship between the first charging pad number and the third charging pad number, in one implementation, the following steps may be performed: when the number of the first charging pads is larger than or equal to the number of the third charging pads, determining that the current charging mode is charging only through the renewable energy system; and when the first charging pad number is smaller than the third charging pad number, determining that the current charging mode is charging through the renewable energy system and the public power grid together.
in the embodiment of the invention, the electric vehicle can be charged through the charging pad, so that the charging efficiency can be improved.
As an implementation manner of the embodiment of the present invention, after the wireless charging system determines the charging mode, the charging pad to be turned on may be determined, so as to charge the electric vehicle through the turned-on charging pad.
for example, the wireless charging system may determine the larger of the first and third charging pad numbers as the number of charging pads to be turned on. That is, when the number of the first charging pads is M, the number of the third charging pads is Mrthe method comprises the following steps:
when M is>MrAnd starting M charging pads, namely the wind energy can independently meet all charging requirements;
M<MrTurn on MrOne charging mat, i.e. wind energy, is not sufficient to provide all the charging requirements, so M charging mats are charged by wind energy, Mr-M charging pads are charged by the public power grid.
In this embodiment, can be according to the demand of charging in real time, confirm the corresponding pad quantity of opening that charges to avoid opening all pads that charge the back, cause the waste of the energy.
As an implementation manner of the embodiment of the present invention, after the number of the charging pads to be turned on is determined, the identifier of the charging pad to be turned on may be selected according to the number of the charging pads to be turned on and the total number of the configured charging pads; wherein the intervals between any two adjacent charging pads in the selected charging pads are equal.
for example, the identity of the charging pad to be turned on may be determined according to the following algorithm:
S1＝1
……
for example, the following steps are carried out: the charging section has a total of 100 charging pads, and now the system has calculated that the number of charging pads that need to be turned on is 20. The identification of the charging mat that needs to be opened in this route section can then be determined according to this formula to be: 1,6, 11, 16, 21, 26, 31, 36, 41, 46, 51, 56, 86, 91, 96.
after the identification of the charging pad to be turned on is selected, the corresponding charging pad may be turned on. For example, when it is detected that the electric vehicle travels to a sensing area of any selected charging pad, the charging pad is turned on.
One known method for opening the charging pad is as follows: all are opened. In this manner, the electric vehicle is charged while traveling directly, which has a disadvantage in that an excessive electromagnetic field is exposed to the space when no electric vehicle passes. Not only has electromagnetic interference to other equipment, also causes the electric energy waste.
The other is the charging pad induction type opening: the automobile is opened when passing by and closed when leaving. The disadvantage of this approach is that the speed of the electric vehicle is required to be very slow, on the one hand because of the excessively fast speed, the effective charging time of the vehicle is short, and on the other hand the switching speed of the device is not as fast as the vehicle speed.
compared with the two methods, in the embodiment, the design method for selectively opening the charging pads gives a corresponding prompt to the driver when the system determines which charging pads are to be opened (for example, the charging pads may be lightened, or the system sends a corresponding deceleration signal). The driver only needs to be sensed by the brake pad sensor of the vehicle when the charging pad is opened, and the vehicle can be automatically decelerated. And the vehicle can normally run at the specified speed of the highway in other places. Therefore, the effective charging of the electric vehicle can be ensured, the running speed of the electric vehicle in a charging road section can be increased, and the effective utilization of electric energy can be ensured.
The following describes the wireless charging method for an electric vehicle according to a specific embodiment of the present invention in detail.
Please refer to fig. 3, which illustrates an application scenario diagram according to an embodiment of the present invention.
As shown in FIG. 3, the wireless charging system may charge a charging pad 331 of a charging area 330 through the wind energy system 310 and the utility grid 320 together.
in this embodiment, one of the important design links is system design based on demand side response, that is, electricity prices can be divided into different price classes according to real-time wind energy and traffic conditions (traffic flow data) prediction. Before entering the charging area 330, the electric vehicle will pass through the communication area 340, and at this time, the system will calculate the real-time wind energy P by predicting the wind speed Vwtand according to the maximum power P that the wind energy system 310 can providemI.e. the sum of the rated power of all the windmills, the total number n of charging pads already laid, and the real-time wind power PwtAccording to the algorithm:calculating real-time wind energy PwtThe number of charging pads M that can be provided.
The traffic flow can be divided into five grades, namely free flow, non-congestion, light congestion, congestion and severe congestion, and the different grades correspond to the number of the charging pads which can be opened correspondingly. Predicting the quantity M of charging pads needing to be opened according to the real-time traffic flow Np。
According to the quantity M of the charging pads which can be provided by predicting wind energy and the quantity M of the charging pads which are required by predicting the traffic circulationpThe value of the comparison determines the charge price p. And provides the electricity price at this time to the user, and the user decides whether to charge. Under the more condition of wind energy output, the system can give low price of electricity and encourage the user to charge more, under the less condition of wind energy output, the system can give higher price of electricity, reduces the user demand of charging.
the price charged is in three levels: low electricity prices, medium electricity prices, and high electricity prices. And transmitting the price to a user side, and determining whether to select charging by the user and giving corresponding information feedback. The system calculates the total collected power demand PrAnd calculating the pass-through requirementobtaining the number M of charging pads needed after side responser. According to the determination of whether to charge, the user may control the electric vehicle to travel to a charging pad or a non-charging lane of the charging area 330.
By comparing the required power and supply capacity after demand side response, i.e. M and MrThe number of the charging pads to be finally turned on and the energy supply mode are determined by the comparison. At this stage, Pwtthe wind power generation system is completely used for aiming at utilizing wind energy to the maximum extent and eliminating the interference of surplus wind power to a power grid.
There are two types of energy supply modes: independent wind energy or wind energy plus energy from the utility grid.
There are two alternative modes of supply for the system:
Case 1: m>MrAnd M charging pads are started, namely, the wind energy can independently meet all charging requirements.
Case 2: m<MrTurn on MrOne charging pad, i.e. wind energy, is not sufficient to provide all the charging requirements, so M charging pads are charged by wind energy, Nr-M charging pads are charged by the grid.
The charging lane schematic is shown in fig. 4, with a multi-segment charging track design because the power transfer efficiency of the multi-segment charging track is higher compared to a longer charging track configuration. The number and specific location of the charging pads on is a system decision. The specific mode is as follows:
The design parameters of the track are as follows:
Length of charging track 1Km
Length of charging pad 9m
Method for manufacturing semiconductor devicelength of interval between 1m
Total number of charging pads embedded in charging rail 100
rated power of single charging pad 100kw
if 20 charging pads need to be opened, the system will calculate their serial number:
1，6，11，16，21，26，31，36，41，46，51，56，86，91，96。
When the electric vehicle approaches the sensing range of the charging pad, the charging pad is automatically opened. Meanwhile, sensors at two ends of a brake pad of the electric vehicle are activated, and a driver of the electric vehicle receives a deceleration signal to ensure sufficient charging time and high charging efficiency. In contrast, when the electric vehicle passes the activated charging pad and goes out of the sensing range, the charging pad will automatically turn off and the electric vehicle driver will receive a normal speed signal, which means that they can drive within any official speed limit.
It should be noted that, the steps in the foregoing method embodiments may be executed in parallel or sequentially, and the present invention is not limited to this. Furthermore, the above method embodiments may be implemented by software or hardware, or by a combination of software and hardware.
Corresponding to the above method embodiment, the embodiment of the present invention further discloses an electric vehicle wireless charging device, as shown in fig. 5, the device includes:
an obtaining module 510, configured to obtain a current power generated by the renewable energy system and a current traffic flow;
A first determining module 520, configured to determine a current power supply amount of the renewable energy system according to the current power, and determine a current required charging amount according to the current traffic flow;
a second determining module 530, configured to determine a current electricity price according to a magnitude relationship between the power supply amount and the charging amount;
A sending module 540, configured to send the current electricity price to each electric vehicle entering a communication area, so that each electric vehicle determines whether to send a charging request based on the current electricity price; the charging request sent by any electric vehicle comprises electric quantity information of the electric vehicle;
a third determining module 550, configured to determine a to-be-charged amount according to electric quantity information of each electric vehicle included in each received charging request, and determine a current charging mode according to a magnitude relationship between the to-be-charged amount and the power supply amount; wherein the current charging mode comprises: charging only through the renewable energy system, or charging through both the renewable energy system and a public power grid.
By adopting the technical scheme, the embodiment of the invention determines the current electricity price based on the current power generated by the renewable energy system and the current traffic flow; then, sending the current price of electricity to the electric vehicle; and finally, according to the charging request fed back by the electric vehicle, determining whether the electric vehicle is charged by using the renewable energy system or the electric vehicle is charged by using the renewable energy system and a public power grid together, so that the utilization rate of renewable energy can be improved. Taking wind energy as an example, when the wind power is high, more wind energy is generated, and the electric vehicle can be charged only through the renewable energy system; when the wind power is low, the generated wind energy is less, and the electric vehicle can be charged by the renewable energy system and the public power grid at the same time, so that the utilization rate of renewable energy is improved while the electric vehicle is charged.
As an implementation manner of the embodiment of the present invention, the first determining module 520 is specifically configured to determine, according to the current power, a number of first charging pads currently available by the renewable energy system; determining the current traffic flow grade according to the current traffic flow, and determining the quantity of second charging pads required currently according to the current traffic flow grade;
correspondingly, the second determining module 530 is specifically configured to compare the first charging pad number and the second charging pad number, and determine the current electricity price according to the comparison result;
The third determining module 550 is specifically configured to determine the number of third charging pads according to the electric quantity information of each electric vehicle included in each received charging request; and determining the current charging mode according to the magnitude relation between the first charging pad quantity and the third charging pad quantity.
as an implementation manner of the embodiment of the present invention, the first determining module 520 is specifically configured to:
acquiring the maximum power corresponding to the renewable energy system and the total number of configured charging pads;
And calculating the ratio of the current power to the maximum power, and multiplying the ratio by the total number of the charging pads to obtain the first number of the charging pads which can be provided by the renewable energy system currently.
As an implementation manner of the embodiment of the present invention, the second determining module 530 is specifically configured to:
calculating a difference between the first number of charging pads and the second number of charging pads;
When the difference value is larger than a preset first threshold value, determining that the current electricity price is a preset low electricity price;
When the difference value is smaller than the preset first threshold value and larger than a preset second threshold value, determining that the current electricity price is a preset middle electricity price; the preset second threshold is smaller than the preset first threshold;
And when the difference value is smaller than the preset second threshold value, determining that the current electricity price is a preset high electricity price.
As an implementation manner of the embodiment of the present invention, the third determining module 550 is specifically configured to:
Determining that the current charging mode is charging only through the renewable energy system when the first charging pad number is greater than or equal to the third charging pad number;
When the first charging pad number is smaller than the third charging pad number, determining that the current charging mode is common charging through the renewable energy system and the public power grid.
as an implementation manner of the embodiment of the present invention, the apparatus further includes:
A fourth determining module, configured to determine a larger value of the first and third numbers of charging pads as a number of charging pads to be turned on;
The selection module is used for selecting the identifier of the charging pad to be started according to the number of the charging pads to be started and the total number of the configured charging pads; wherein the intervals between any two adjacent charging pads in the selected charging pads are equal.
as an implementation manner of the embodiment of the present invention, the apparatus further includes:
and the starting module is used for starting the charging pad when the electric vehicle is detected to run to the sensing area of any selected charging pad.
It should be noted that the device of the embodiment of the present invention is a device applying the above dynamic wireless charging method for an electric vehicle, and the embodiments of the dynamic wireless charging method for an electric vehicle are all applicable to the device and all can achieve the same or similar beneficial effects.
Based on the same technical concept as the method embodiment, an embodiment of the present invention further provides an electronic device, as shown in fig. 6, including a processor 61, a communication interface 62, a memory 63, and a communication bus 64, where the processor 61, the communication interface 62, and the memory 63 complete mutual communication through the communication bus 64;
a memory 63 for storing a computer program;
The processor 61 is configured to implement the method steps described in the above method embodiments when executing the program stored in the memory 63.
by adopting the technical scheme, the embodiment of the invention determines the current electricity price based on the current power generated by the renewable energy system and the current traffic flow; then, sending the current price of electricity to the electric vehicle; and finally, according to the charging request fed back by the electric vehicle, determining whether the electric vehicle is charged by using the renewable energy system or the electric vehicle is charged by using the renewable energy system and a public power grid together, so that the utilization rate of renewable energy can be improved. Taking wind energy as an example, when the wind power is high, more wind energy is generated, and the electric vehicle can be charged only through the renewable energy system; when the wind power is low, the generated wind energy is less, and the electric vehicle can be charged by the renewable energy system and the public power grid at the same time, so that the utilization rate of renewable energy is improved while the electric vehicle is charged.
The communication bus 64 mentioned in the above electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 6, but this is not intended to represent only one bus or type of bus.
the communication interface 62 is used for communication between the electronic device and other devices.
The Memory 63 may include a Random Access Memory (RAM) or a non-volatile Memory (NVM), such as at least one disk Memory. Optionally, the memory may also be at least one memory device located remotely from the processor.
the Processor 61 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a network Processor (Ne word Processor, NP), and the like; but also Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components.
such electronic devices include, but are not limited to, smart phones, computers, personal digital assistants, wearable devices, and the like.
based on the same technical concept as the method embodiment, the embodiment of the invention also provides a computer-readable storage medium. The computer-readable storage medium has stored therein a computer program which, when being executed by a processor, carries out the method steps of the above-mentioned method embodiments.
It will be appreciated by those skilled in the art that the computer program described above may comprise instructions for causing a computing device (e.g. a personal computer, a server, etc.) to perform the method steps described in any of the method embodiments described above.
the computer-readable storage medium may include, but is not limited to, a Random Access Memory (RAM), a Dynamic Random Access Memory (DRAM), a Static Random Access Memory (SRAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a flash memory (e.g., a NOR-type flash memory or a NAND-type flash memory), a Content Addressable Memory (CAM), a polymer memory (e.g., a ferroelectric polymer memory), a phase change memory, an ovonic memory, a Silicon-Oxide-Silicon-Nitride-Oxide-Silicon (Silicon-Oxide-Nitride-Oxide-Silicon (os-son) memory, a magnetic or optical card, or any other suitable type of computer-readable storage medium.
by adopting the technical scheme, the embodiment of the invention determines the current electricity price based on the current power generated by the renewable energy system and the current traffic flow; then, sending the current price of electricity to the electric vehicle; and finally, according to the charging request fed back by the electric vehicle, determining whether the electric vehicle is charged by using the renewable energy system or the electric vehicle is charged by using the renewable energy system and a public power grid together, so that the utilization rate of renewable energy can be improved. Taking wind energy as an example, when the wind power is high, more wind energy is generated, and the electric vehicle can be charged only through the renewable energy system; when the wind power is low, the generated wind energy is less, and the electric vehicle can be charged by the renewable energy system and the public power grid at the same time, so that the utilization rate of renewable energy is improved while the electric vehicle is charged.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present specification are described in a related manner, each embodiment focuses on differences from other embodiments, and the same and similar parts in the embodiments are referred to each other. In particular, as for the apparatus, the electronic device, and the storage medium, since they are substantially similar to the method embodiments, the description is simple, and the relevant points can be referred to only the partial description of the method embodiments.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. A wireless charging method for an electric vehicle, the method comprising:
Acquiring current power and current traffic flow generated by a renewable energy system;
Determining the current power supply quantity of the renewable energy system according to the current power, and determining the current required charging quantity according to the current traffic flow;
Determining the current electricity price according to the size relationship between the power supply amount and the charging amount;
Transmitting the current power rates to each electric vehicle entering a communication area, so that each electric vehicle determines whether to transmit a charging request based on the current power rates; the charging request sent by any electric vehicle comprises electric quantity information of the electric vehicle;
Determining a to-be-charged amount according to electric quantity information of each electric vehicle included in each received charging request, and determining a current charging mode according to the size relationship between the to-be-charged amount and the power supply amount; wherein the current charging mode comprises: charging only through the renewable energy system, or charging through both the renewable energy system and a public power grid.
2. The method of claim 1, wherein said determining a current amount of power supplied by said renewable energy system based on said current power and a current required amount of charge based on said current flow of traffic comprises:
Determining a first number of charging pads currently available by the renewable energy system according to the current power; determining the current traffic flow grade according to the current traffic flow, and determining the quantity of second charging pads required currently according to the current traffic flow grade;
Correspondingly, the determining the current electricity price according to the magnitude relation between the power supply amount and the charging amount comprises:
comparing the first charging pad number with the second charging pad number, and determining the current price of electricity according to the comparison result;
the determining a to-be-charged amount according to the electric quantity information of each electric vehicle included in each received charging request, and determining a current charging mode according to the magnitude relation between the to-be-charged amount and the power supply amount includes:
determining the number of third charging pads according to the electric quantity information of each electric vehicle included in each received charging request; and determining the current charging mode according to the magnitude relation between the first charging pad quantity and the third charging pad quantity.
3. the method of claim 2, wherein said determining a first number of charging pads currently available to the renewable energy system based on the current power comprises:
Acquiring the maximum power corresponding to the renewable energy system and the total number of configured charging pads;
And calculating the ratio of the current power to the maximum power, and multiplying the ratio by the total number of the charging pads to obtain the first number of the charging pads which can be provided by the renewable energy system currently.
4. the method of claim 2, wherein comparing the first number of charging pads to the second number of charging pads and determining a current price of electricity based on the comparison comprises:
Calculating a difference between the first number of charging pads and the second number of charging pads;
When the difference value is larger than a preset first threshold value, determining that the current electricity price is a preset low electricity price;
When the difference value is smaller than the preset first threshold value and larger than a preset second threshold value, determining that the current electricity price is a preset middle electricity price; the preset second threshold is smaller than the preset first threshold;
And when the difference value is smaller than the preset second threshold value, determining that the current electricity price is a preset high electricity price.
5. The method of claim 2, wherein determining the current charging mode according to the magnitude relationship between the first charging pad number and the third charging pad number comprises:
determining that the current charging mode is charging only through the renewable energy system when the first charging pad number is greater than or equal to the third charging pad number;
When the first charging pad number is smaller than the third charging pad number, determining that the current charging mode is common charging through the renewable energy system and the public power grid.
6. The method of claim 5, further comprising:
determining the larger value of the first charging pad number and the third charging pad number as the number of charging pads to be started;
Selecting an identifier of the charging pad to be started according to the number of the charging pads to be started and the total number of the configured charging pads; wherein the intervals between any two adjacent charging pads in the selected charging pads are equal.
7. The method of claim 6, wherein after selecting the identity of the charging pad to be turned on, the method further comprises:
And when the electric vehicle is detected to run to the sensing area of any selected charging pad, the charging pad is started.
8. An electric vehicle wireless charging apparatus, the apparatus comprising:
the acquisition module is used for acquiring the current power and the current traffic flow generated by the renewable energy system;
The first determining module is used for determining the current power supply quantity of the renewable energy system according to the current power and determining the current required charging quantity according to the current traffic flow;
the second determination module is used for determining the current electricity price according to the magnitude relation between the power supply quantity and the charging quantity;
The sending module is used for sending the current electricity price to each electric vehicle entering a communication area so that each electric vehicle can determine whether to send a charging request or not based on the current electricity price; the charging request sent by any electric vehicle comprises electric quantity information of the electric vehicle;
The third determining module is used for determining a to-be-charged amount according to the electric quantity information of each electric vehicle included in each received charging request, and determining a current charging mode according to the magnitude relation between the to-be-charged amount and the power supply amount; wherein the current charging mode comprises: charging only through the renewable energy system, or charging through both the renewable energy system and a public power grid.
9. An electronic device, comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus;
The memory is used for storing a computer program;
The processor, when executing the program stored in the memory, is adapted to perform the method steps of any of claims 1-7.
10. a computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, which computer program, when being executed by a processor, carries out the method steps of any one of claims 1 to 7.
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