New energy automobile charging control method and system based on photovoltaic intelligent road

Abstract

The invention discloses a new energy automobile charging control method and system based on a photovoltaic intelligent road, and relates to the technical field of new energy automobiles, and the method comprises the steps: collecting the operation state information data of a photovoltaic intelligent road unit, an energy storage battery unit, a charging pile unit and a public power grid through a real-time monitoring sensor in a charging station; the collected operation state information data and a charging request of a new energy automobile received by a vehicle-mounted charging management unit are sent to a central control platform, and meanwhile, the central control platform obtains the peak-valley state of the current time period in real time through a power grid monitoring unit; and the central control platform dispatches the photovoltaic intelligent road unit to supply electric energy according to the charging request and a robust energy grading priority power supply strategy, and the charging pile unit connected to the public power grid charges the new energy vehicle through the vehicle-mounted charging management unit based on the energy storage battery unit. According to the invention, charging control of the photovoltaic intelligent road and the new energy vehicle can be effectively integrated, and efficient charging service is provided for the new energy vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle charging, and more specifically to a new energy vehicle charging control method and system based on a photovoltaic intelligent road. Background Art

[0002] Currently, with the popularization of new energy vehicles, the demand for charging infrastructure is increasing day by day. Traditional charging stations face problems such as tight land resources and low charging efficiency. In recent years, as an emerging technology, photovoltaic intelligent roads can collect solar energy on the road surface and convert it into electrical energy, providing the possibility of dynamic wireless charging for new energy vehicles. However, the current photovoltaic intelligent roads cannot provide efficient charging services for new energy vehicles, mainly including the following problems:

[0003] (1) Traditional charging facilities rely on the power grid. Existing charging piles mainly rely on the public power grid, resulting in a high power grid load. Especially during peak hours, it may lead to great power supply pressure and relatively high electricity prices.

[0004] (2) Insufficient utilization of renewable energy. Although there are solar charging piles, the integrated energy system such as photovoltaic intelligent roads may not be fully utilized, resulting in energy waste.

[0005] (3) Limited application of energy storage technology. The role of energy storage systems in peak shaving and valley filling has not been fully integrated into the charging process, resulting in low energy utilization efficiency.

[0006] (4) Insufficient dynamic supply-demand matching. The charging demand fluctuates greatly, while the power supply system lacks a flexible scheduling mechanism and cannot effectively balance supply and demand, resulting in energy costs and power grid pressure.

[0007] Therefore, how to effectively integrate photovoltaic intelligent roads with new energy vehicle charging control has become an urgent problem to be solved. Summary of the Invention

[0008] To solve the deficiencies in the prior art, the present invention provides a new energy vehicle charging control system and method based on a photovoltaic intelligent road to improve charging efficiency and energy utilization efficiency.

[0009] The present invention adopts the following technical solutions.

[0010] The present invention provides a new energy vehicle charging control method based on a photovoltaic intelligent road, including:

[0011] Collecting operation status information data of the photovoltaic intelligent road unit, energy storage battery unit, charging pile unit, and public power grid through real-time monitoring sensors in the charging station, including the electric energy conversion power of the photovoltaic intelligent road unit, the electric energy power in the energy storage battery unit, and the charging demand load of the charging pile unit;

[0012] The collected operation status information data, and the on-vehicle charging management unit receives the charging request of the new energy vehicle and sends it to the central control platform. At the same time, the central control platform obtains the peak-valley state of the current period in real time through the power grid monitoring unit;

[0013] According to the electric energy converted by the photovoltaic intelligent road unit and the charging demand load, a robust energy hierarchical priority power supply strategy is established, and the power supply relationship among the photovoltaic, energy storage and power grid is judged through the power supply strategy and the peak-valley state of the power grid;

[0014] The central control platform schedules the photovoltaic intelligent road unit to supply electric energy according to the charging request based on the robust energy hierarchical priority power supply strategy, and charges the new energy vehicle through the energy storage battery unit, the charging pile unit connected to the public power grid and the on-vehicle charging management unit.

[0015] Preferably, the robust energy hierarchical priority power supply strategy includes:

[0016] When any one of the electric energy converted by the photovoltaic intelligent road unit, the electric energy in the energy storage battery unit, and the sum of the two electric energies meets the charging demand of the new energy vehicle, the electric energy converted by the photovoltaic intelligent road unit and the electric energy in the energy storage battery unit are preferentially supplied with power, and the power dispatching of the robust energy hierarchical priority power supply is realized;

[0017] If the electric energy converted by the photovoltaic intelligent road unit and the electric energy in the energy storage battery unit do not meet the charging demand of the new energy vehicle, the electric energy converted by the photovoltaic intelligent road unit and the electric energy in the energy storage battery unit are used as the first priority power supply electric energy, and the electricity is purchased from the public power grid as the second supplementary power supply electric energy.

[0018] Preferably, the power dispatching process of the robust energy hierarchical priority power supply includes:

[0019] According to the electric energy converted by the photovoltaic intelligent road unit and the charging demand load, a robust energy hierarchical priority power supply constraint condition is established, and the power supply relationship among the photovoltaic, energy storage and power grid is judged according to the constraint condition and the power grid state;

[0020] If the current power grid state is in the low valley period, and the electric energy converted by the photovoltaic intelligent road unit is greater than the charging demand load of the charging pile unit accessed by the new energy vehicle, after meeting the charging demand load, the surplus electric energy of the photovoltaic is used to charge the energy storage battery unit; if the electric energy converted by the photovoltaic intelligent road unit is less than the charging demand load of the charging pile unit accessed by the new energy vehicle, the part of the shortage due to insufficient photovoltaic power supply is supplemented by purchasing electricity from the public power grid;

[0021] If the current power grid state is in the normal period, and the electric energy converted by the photovoltaic intelligent road unit is greater than the charging demand load of the charging pile unit accessed by new energy vehicles, after meeting the charging demand load, the surplus electric energy of the photovoltaic will be used to charge the energy storage battery unit; if the electric energy converted by the photovoltaic intelligent road unit is less than the charging demand load of the charging pile unit accessed by new energy vehicles, the part of the power supply shortage based on the photovoltaic will be provided by the energy storage battery unit first, and if there is still a power supply gap, electricity will be purchased from the public power grid to continue to supplement.

[0022] If the current power grid state is in the peak period, and the electric energy converted by the photovoltaic intelligent road unit is greater than the charging demand load of the charging pile unit accessed by new energy vehicles, after meeting the charging demand load, the surplus electric energy of the photovoltaic will first be selected to feed back to the public power grid; if the electric energy converted by the photovoltaic intelligent road unit is less than the charging demand load of the charging pile unit accessed by new energy vehicles, the part of the power supply shortage based on the photovoltaic will be provided by the energy storage battery unit first, and if there is still a power supply gap, electricity will be purchased from the public power grid to continue to supplement.

[0023] Preferably, the establishment of the robust energy hierarchical priority power supply constraint conditions includes:

[0024] The charging demand load power is composed of the electric energy power converted by the photovoltaic intelligent road unit, the electric energy power in the energy storage battery unit, and the electric energy power provided by the public power grid, and the constraint to be satisfied is:

[0025] Logic1: To meet the charging demand, ensure that the sum of the charging powers of the three at any time is greater than the charging demand load power;

[0026] Logic2: At the same time, the electric energy power consumed by the photovoltaic intelligent road unit within a certain cycle period does not exceed the electric energy power converted by the photovoltaic intelligent road unit within the current cycle period;

[0027] Logic3: The actual electric energy power converted by the photovoltaic intelligent road unit within a certain cycle period does not exceed the sum of the electric energy power provided by the photovoltaic intelligent road unit to the energy storage battery, the charging power of the electric energy of the photovoltaic intelligent road unit to the energy storage battery unit, and the electric energy power provided by the photovoltaic intelligent road unit to the public power grid within the current cycle period.

[0028] Preferably, the establishment of the robust energy hierarchical priority power supply constraint conditions includes:

[0029] When the number of new energy vehicles connected in the charging station meets the specified number within the station, based on the maximum load power of electricity access allowed by the public grid and the limit of the maximum power of electricity carried on the grid, the maximum load power of electricity access allowed by the public grid is not less than the sum of the power of electricity provided by the public grid for the charging pile unit and the charging power provided by the public grid for the energy storage battery unit during the cycle period, and the maximum power of electricity carried on the grid is greater than or equal to the power of electricity provided by the photovoltaic intelligent road unit for the public grid during the cycle period.

[0030] The present invention also provides a new energy vehicle charging control system based on a photovoltaic intelligent road, which is applied to the above-mentioned new energy vehicle charging control method based on a photovoltaic intelligent road:

[0031] A photovoltaic intelligent road unit, an in-vehicle charging management unit, a central control platform, an energy storage battery unit, a charging pile unit and a public grid;

[0032] The photovoltaic intelligent road unit is communicatively connected to the central control platform;

[0033] The in-vehicle charging management unit is communicatively connected to the central control platform and installed inside the new energy electric vehicle, and is used to receive the power of electricity from the charging pile unit and manage the charging process;

[0034] The charging pile unit is connected to the photovoltaic intelligent road unit, the energy storage battery unit and the public grid, and is used to obtain the power of electricity scheduled by the photovoltaic intelligent road unit, the energy storage battery unit and the public grid according to the robust energy hierarchical priority power supply strategy and transmit it to the in-vehicle charging management unit.

[0035] The photovoltaic intelligent road unit is used to convert solar energy into electricity and cooperate with the energy storage battery unit and the public grid to transmit the power of electricity to the in-vehicle charging management unit through the charging pile unit to supply power to the new energy vehicle;

[0036] The central control platform is used to establish a robust energy hierarchical priority power supply strategy according to the power of electricity converted by the photovoltaic intelligent road unit and the charging demand load, judge the power supply relationship between the photovoltaic, energy storage and the grid through the power supply strategy and the peak-valley state of the grid, and perform scheduling control on the photovoltaic intelligent road unit and the in-vehicle charging management unit.

[0037] Preferably, the photovoltaic intelligent road unit includes a photovoltaic panel, an energy storage battery unit, an energy conversion module, a data acquisition and transmission module;

[0038] The photovoltaic panel is connected to the energy storage battery unit through the energy conversion module, the energy storage battery unit is connected to the data acquisition and transmission module, and the data acquisition and transmission module is respectively connected to the central control platform and the in-vehicle charging management unit.

[0039] Preferably, the on-vehicle charging management unit is installed on a new energy vehicle and includes an on-vehicle energy management module and an on-vehicle wireless communication module;

[0040] The on-vehicle energy management module is respectively connected to the on-vehicle wireless communication module, the new energy vehicle, and the data acquisition and transmission module, and the on-vehicle wireless communication module is connected to the central control platform.

[0041] Preferably, the central control platform includes a data processing center, a charging strategy control module, a scheduling management module, and a security protection module;

[0042] The data processing center is used to receive the converted electric energy power of the photovoltaic intelligent road unit and the data transmitted by the on-vehicle charging management unit, and after data cleaning, it transmits the data to the charging strategy control module, the scheduling management module, and the security protection module respectively;

[0043] The charging strategy control module is used to predict the charging demand of the new energy vehicle according to the data, generate a charging power adjustment instruction and transmit it to the on-vehicle charging management unit.

[0044] Preferably, the scheduling management module is used to establish a robust energy hierarchical priority power supply strategy according to the converted electric energy of the photovoltaic intelligent road unit and the charging demand load, judge the power supply relationship between the photovoltaic, energy storage, and the power grid through the power supply strategy and the peak-valley state of the power grid, generate a road scheduling instruction and transmit it to the photovoltaic intelligent road unit;

[0045] The security protection module is used to perform security warning judgment according to the data, generate protection instructions and transmit them to the photovoltaic intelligent road unit and the on-vehicle charging management unit respectively.

[0046] The beneficial effects of the present invention are as follows: compared with the prior art:

[0047] (1) The present invention can reduce the dependence of new energy vehicles on the traditional power grid, increase the flexibility of energy utilization, realize the efficient interaction between new energy vehicles and photovoltaic intelligent roads through wireless communication charging, effectively improve the charging efficiency, convert solar energy into electric energy through the photovoltaic intelligent road unit, and give priority to using it for the charging of new energy vehicles. When any one of the electric energy converted by the photovoltaic intelligent road unit, the electric energy in the energy storage battery unit, and the sum of the two electric energies meets the charging demand of the new energy vehicle, these electric energies are preferentially used for power supply, realizing the full utilization of renewable energy, reducing the dependence on the traditional public power grid, reducing carbon emissions, and conforming to the sustainable development energy strategy.

[0048] (2) Reasonably handle the surplus photovoltaic power according to the peak-valley state of the power grid and the charging demand load. During the low-load period, if the electric energy converted by the photovoltaic intelligent road unit is greater than the charging demand load, the surplus electric energy is used to charge the energy storage battery unit; during the peak-load period, if there is surplus photovoltaic power, it is preferentially fed back to the public power grid. This energy storage and energy allocation method balances the power consumption load of the power grid, improves the energy utilization efficiency, and avoids energy waste.

[0049] (3) By establishing robust energy hierarchical priority power supply constraint conditions, it is ensured that the charging demand load power is reasonably provided by the photovoltaic intelligent road unit, the energy storage battery unit, and the public power grid, avoiding over-power supply or under-power supply. At the same time, considering the limitations of the maximum load power allowed to be connected to the public power grid and the maximum power generation capacity of the public power grid, it ensures the safe and stable operation of the charging system and the public power grid.

[0050] (4) The system adopts a modular design, including modules such as photovoltaic intelligent road units, on-vehicle charging management units, central control platforms, energy storage battery units, charging pile units, and public power grids. The modules are connected for communication to achieve real-time data transmission and sharing. This design makes the system have good scalability and flexibility, facilitating system upgrade and maintenance. The central control platform analyzes and processes the data of each module through the data processing center, establishes a robust energy hierarchical priority power supply strategy based on the electric energy converted by the photovoltaic intelligent road unit and the charging demand load, judges the power supply relationship among photovoltaic, energy storage, and the power grid, and conducts scheduling control. At the same time, the charging strategy control module can predict the charging demand of new energy vehicles and generate charging power adjustment instructions; the scheduling management module can generate road scheduling instructions; the safety protection module can conduct safety warning judgments and generate protection instructions, improving the intelligent level and management efficiency of the system. Description of the Drawings

[0051] Figure 1 Schematic diagram of a new energy vehicle charging control method based on a photovoltaic intelligent road provided by the present invention;

[0052] Figure 2 Schematic diagram of the structure of a new energy vehicle charging control system based on a photovoltaic intelligent road provided by the present invention. Detailed Embodiments

[0053] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The embodiments described in this application are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the spirit of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0054] As Figure 1 shown, Embodiment 1 of the present invention discloses a new energy vehicle charging control method based on a photovoltaic intelligent road, including the following steps:

[0055] S1: Collect operation status information data of the photovoltaic intelligent road unit, energy storage battery unit, charging pile unit, and public power grid through real-time monitoring sensors in the charging station, including the power conversion of the photovoltaic intelligent road unit, the electrical energy power in the energy storage battery unit, and the charging demand load of the charging pile unit;

[0056] S2: Send the collected operation status information data, and the on-vehicle charging management unit receives the charging request of the new energy vehicle and sends it to the central control platform. At the same time, the central control platform obtains the peak-valley state at the current time period in real time through the power grid monitoring unit;

[0057] S3: Establish a robust energy hierarchical priority power supply strategy based on the power conversion of the photovoltaic intelligent road unit and the charging demand load, and judge the power supply relationship between photovoltaic, energy storage, and the power grid through the power supply strategy and the peak-valley state of the power grid;

[0058] S4: The central control platform schedules the photovoltaic intelligent road unit to supply electrical energy according to the charging request based on the robust energy hierarchical priority power supply strategy, and charges the new energy vehicle through the energy storage battery unit, the charging pile unit connected to the public power grid, and the on-vehicle charging management unit.

[0059] Further preferably, the robust energy hierarchical priority power supply strategy includes:

[0060] When any one of the electrical energy converted by the photovoltaic intelligent road unit, the electrical energy in the energy storage battery unit, and the sum of the two electrical energies meets the charging demand of the new energy vehicle, the electrical energy converted by the photovoltaic intelligent road unit and the electrical energy in the energy storage battery unit are preferentially supplied, and the electrical energy scheduling of robust energy hierarchical priority power supply is realized;

[0061] If the electrical energy converted by the photovoltaic intelligent road unit and the electrical energy in the energy storage battery unit do not meet the charging demand of the new energy vehicle, the electrical energy converted by the photovoltaic intelligent road unit and the electrical energy in the energy storage battery unit are used as the first priority power supply electrical energy, and power is purchased from the public power grid as the second supplementary power supply electrical energy.

[0062] Further preferably, the electrical energy scheduling process of the robust energy hierarchical priority power supply includes:

[0063] Establish a robust energy hierarchical priority power supply constraint condition based on the power conversion of the photovoltaic intelligent road unit and the charging demand load, and judge the power supply relationship between photovoltaic, energy storage, and the power grid according to the constraint condition and the power grid state;

[0064] If the current power grid state is in the low valley period, the electric energy converted by the photovoltaic intelligent road unit is greater than the charging demand load of the charging pile unit accessed by new energy vehicles. After meeting the charging demand load, the surplus electric energy of the photovoltaic is used to charge the energy storage battery unit; if the electric energy converted by the photovoltaic intelligent road unit is less than the charging demand load of the charging pile unit accessed by new energy vehicles, the insufficient part of the photovoltaic power supply is supplemented by purchasing electricity from the public power grid.

[0065] If the current power grid state is in the normal period, the electric energy converted by the photovoltaic intelligent road unit is greater than the charging demand load of the charging pile unit accessed by new energy vehicles. After meeting the charging demand load, the surplus electric energy of the photovoltaic is used to charge the energy storage battery unit; if the electric energy converted by the photovoltaic intelligent road unit is less than the charging demand load of the charging pile unit accessed by new energy vehicles, the insufficient part of the photovoltaic power supply is first provided by the energy storage battery unit, and if there is still a power supply gap, it is continued to be supplemented by purchasing electricity from the public power grid.

[0066] If the current power grid state is in the peak period, the electric energy converted by the photovoltaic intelligent road unit is greater than the charging demand load of the charging pile unit accessed by new energy vehicles. After meeting the charging demand load, the surplus electric energy of the photovoltaic is first selected to feed back to the public power grid; if the electric energy converted by the photovoltaic intelligent road unit is less than the charging demand load of the charging pile unit accessed by new energy vehicles, the insufficient part of the photovoltaic power supply is first provided by the energy storage battery unit, and if there is still a power supply gap, it is continued to be supplemented by purchasing electricity from the public power grid.

[0067] Further preferably, the establishment of the robust energy hierarchical priority power supply constraint conditions includes:

[0068] The charging demand load power is composed of the electric energy power converted by the photovoltaic intelligent road unit, the electric energy power in the energy storage battery unit, and the electric energy power provided by the public power grid, and the constraints are satisfied as follows:

[0069] Logic1: To meet the charging demand, it is necessary to ensure that the sum of the charging powers of the three at any time is greater than the charging demand load power;

[0070] Logic2: At the same time, the electric energy power converted by the photovoltaic intelligent road unit consumed within a certain cycle period does not exceed the electric energy power converted by the photovoltaic intelligent road unit within the current cycle period;

[0071] Logic3: The actual electric energy power converted by the photovoltaic intelligent road unit within a certain cycle period does not exceed the sum of the electric energy power provided by the photovoltaic intelligent road unit to the energy storage battery, the charging power of the electric energy of the photovoltaic intelligent road unit to the energy storage battery unit, and the electric energy power provided by the photovoltaic intelligent road unit to the public power grid within the current cycle period.

[0072] Further preferably, the establishment of the robust energy hierarchical priority power supply constraint conditions includes:

[0073] When the number of new energy vehicles connected in the charging station meets the specified number within the station, based on the limitations of the maximum load power of electricity access allowed by the public grid and the maximum power of electricity carried by the grid for connection to the Internet, the maximum load power of electricity access allowed by the public grid is not less than the sum of the power of electricity provided by the public grid for the charging pile unit and the charging power provided by the public grid for the energy storage battery unit during the cycle period, and the maximum power of electricity carried by the grid for connection to the Internet is greater than or equal to the power of electricity provided by the photovoltaic intelligent road unit for the public grid during the cycle period.

[0074] As Figure 2 shown, Embodiment 2 of the present invention provides a new energy vehicle charging control system based on a photovoltaic intelligent road, which runs the new energy vehicle charging control method described in Embodiment 1, including:

[0075] such as a photovoltaic intelligent road unit, an in-vehicle charging management unit, a central control platform, an energy storage battery unit, a charging pile unit and a public grid;

[0076] The photovoltaic intelligent road unit is communicatively connected to the central control platform;

[0077] The in-vehicle charging management unit is communicatively connected to the central control platform and installed inside the new energy electric vehicle, and is used to receive the power of electricity from the charging pile unit and manage the charging process;

[0078] The charging pile unit is connected to the photovoltaic intelligent road unit, the energy storage battery unit and the public grid, and is used to obtain the power of electricity scheduled by the photovoltaic intelligent road unit, the energy storage battery unit and the public grid according to the robust energy classification priority power supply strategy and transmit it to the in-vehicle charging management unit.

[0079] The photovoltaic intelligent road unit is used to convert solar energy into electricity and cooperate with the energy storage battery unit and the public grid to transmit the power of electricity to the in-vehicle charging management unit through the charging pile unit to supply power to the new energy vehicle;

[0080] The central control platform is used to establish a robust energy classification priority power supply strategy according to the power of electricity converted by the photovoltaic intelligent road unit and the charging demand load, judge the power supply relationship between the photovoltaic, energy storage and the grid through the power supply strategy and the peak-valley state of the grid, and perform the scheduling control of the photovoltaic intelligent road unit and the in-vehicle charging management unit.

[0081] The on-vehicle charging management unit monitors the charging requests of new energy vehicles in real time. When a new energy vehicle sends a charging request to the on-vehicle charging management unit, the on-vehicle charging management unit receives the charging request and feeds it back to the central control platform. The central control platform schedules the photovoltaic intelligent road unit to wirelessly charge the new energy vehicle through the on-vehicle charging management unit, realizing the utilization of photovoltaic new energy and intelligent charging control.

[0082] The communication connection adopted in the embodiments of the present invention connects different devices or networks to realize the process of information transmission and exchange. The communication connection can be wired or wireless. The wired signal connection mainly establishes a direct connection between different devices through physical cables such as Ethernet cables and telephone lines. The present invention mainly uses wireless signal connections for signal data transmission, such as technologies like Wi-Fi, Bluetooth, and infrared, to connect different devices together.

[0083] The photovoltaic intelligent road unit involved in the present invention refers to a road that integrates photovoltaic power generation technology in road infrastructure. Solar panels can be installed on the surface or the curb of these roads (for example: photovoltaic road surfaces, photovoltaic street lamps, etc.). The light energy is converted into electrical energy through the solar panels to supply the electric vehicle charging piles on the road surface or directly charge the electric vehicle. Intelligent roads usually also have functions such as vehicle-road collaboration and intelligent traffic management, and can communicate with vehicles and road facilities to adjust the charging power, charging time, and load management of the charging network in real time, achieving the purpose of optimizing the charging process.

[0084] The embodiments of the present invention further illustrate wireless charging for new energy vehicles. New energy vehicles can use a photovoltaic wireless charging system for charging. The photovoltaic wireless charging system charges by combining distributed power generation and energy storage complementarity and using solar energy. It not only conforms to the concept of sustainable development but also effectively improves the application level of electric vehicles. This system can also maintain safety in bad weather such as rain and snow because there is no direct electrical contact between the charger and the electric vehicle, avoiding the risk of electric shock.

[0085] Furthermore, the photovoltaic intelligent road unit includes a photovoltaic panel, an energy storage battery unit, an energy conversion module, and a data acquisition and transmission module;

[0086] The photovoltaic panel is connected to the energy storage battery unit through the energy conversion module;

[0087] The energy storage battery unit is connected to the data acquisition and transmission module;

[0088] The data acquisition and transmission module is connected to the central control platform,

[0089] The data acquisition and transmission module is connected to the on-vehicle charging management unit;

[0090] The photovoltaic panel includes a number of photovoltaic modules, which are used to collect and capture solar energy and transmit the obtained solar energy to the energy conversion module;

[0091] The energy conversion module is used to convert the solar energy captured by the photovoltaic panel into electrical energy and transmit it to the energy storage battery unit for energy storage;

[0092] The data acquisition and transmission module is used for wireless communication and wireless power supply.

[0093] In the embodiment of the present invention, the energy conversion module often acts as an inverter in systems such as photovoltaic systems, wind power generation systems, and energy storage systems. The electrical energy output by the photovoltaic panel is direct current (DC), while most household appliances, new energy vehicles, and the power grid require alternating current (AC). Therefore, the energy conversion module converts the direct current generated by the photovoltaic panel into alternating current through an inverter, connects to the power grid, or directly charges new energy vehicles through the on-vehicle charging management unit.

[0094] Furthermore, the on-vehicle charging management unit is installed on the new energy vehicle and includes an on-vehicle energy management module and an on-vehicle wireless communication module;

[0095] The on-vehicle energy management module is connected to the on-vehicle wireless communication module;

[0096] The on-vehicle energy management module is connected to the energy supply unit of the new energy vehicle;

[0097] The on-vehicle energy management module is connected to the data acquisition and transmission module of the photovoltaic intelligent road unit,

[0098] The on-vehicle wireless communication module is connected to the central control platform;

[0099] The on-vehicle energy management module is used for wireless charging, charging management, and monitoring the status of new energy vehicles.

[0100] Furthermore, the central control platform includes a data processing center, a charging strategy control module, a scheduling management module, and a security protection module;

[0101] The data processing center is used to receive the converted electrical energy power of the photovoltaic intelligent road unit and the data transmitted by the on-vehicle charging management unit, and after data cleaning, transmit them to the charging strategy control module, the scheduling management module, and the security protection module respectively;

[0102] The charging strategy control module is used to predict the charging demand of new energy vehicles based on the data, generate a charging power adjustment instruction, and transmit it to the on-vehicle charging management unit;

[0103] The scheduling management module is used to establish a robust energy hierarchical priority power supply strategy based on the converted electric energy and charging demand load of the photovoltaic intelligent road unit, generate a road scheduling instruction by judging the power supply relationship among the photovoltaic, energy storage and power grid according to the power supply strategy and the peak-valley state of the power grid, and transmit it to the photovoltaic intelligent road unit;

[0104] The safety protection module is used to judge safety warnings according to data and generate protection instructions to be transmitted to the photovoltaic intelligent road unit and the in-vehicle charging management unit respectively. Further, data cleaning can improve data quality and lay a good foundation for subsequent data analysis; data cleaning includes: missing value processing, outlier detection and processing, duplicate data processing, data type conversion, data normalization, data filtering, etc.;

[0105] Among them, missing value processing includes: deleting records containing missing values; filling missing values with the mean, median or mode; filling missing values using interpolation methods; filling with specific values or predicted values based on other variables;

[0106] Outlier detection and processing includes: identifying outliers using box plots (IQR); identifying outliers using the Z-score method; deleting outliers; replacing outliers with the mean, median or other statistical values;

[0107] Duplicate data processing includes: deleting exactly the same duplicate records; merging or deleting records with partially duplicate fields;

[0108] Data type conversion includes: converting character data to numeric (such as converting "yes", "no" to 1 and 0); adjusting the format of dates and times;

[0109] Data normalization methods include: Min-Max Scaling, Standard Scaling and decimal scaling normalization;

[0110] Data filtering includes: screening valid data according to preset specific conditions and removing irrelevant feature data.

[0111] The beneficial effects of the present invention are as follows. Compared with the prior art:

[0112] (1) The present invention can reduce the dependence of new energy vehicles on the traditional power grid, increase the flexibility of energy utilization, achieve efficient interaction between new energy vehicles and photovoltaic intelligent roads through wireless communication charging, effectively improve the charging efficiency, convert solar energy into electrical energy through photovoltaic intelligent road units, and give priority to charging new energy vehicles. When any one of the electrical energy converted by the photovoltaic intelligent road unit, the electrical energy in the energy storage battery unit, and the sum of the two electrical energies meets the charging demand of the new energy vehicle, these electrical energies are preferentially used for power supply, realizing the full utilization of renewable energy, reducing the dependence on the traditional public power grid, reducing carbon emissions, and conforming to the sustainable development energy strategy.

[0113] (2) According to the peak-valley state of the power grid and the charging demand load, the redundant electrical energy of the photovoltaic is reasonably processed. During the low valley period, if the electrical energy converted by the photovoltaic intelligent road unit is greater than the charging demand load, the redundant electrical energy is used to charge the energy storage battery unit; during the peak period, if there is surplus photovoltaic electrical energy, it is preferentially fed back to the public power grid. This energy storage and energy allocation method balances the power consumption load of the power grid, improves the energy utilization efficiency, and avoids energy waste.

[0114] (3) By establishing robust energy hierarchical priority power supply constraint conditions, it is ensured that the charging demand load power is reasonably provided by the photovoltaic intelligent road unit, the energy storage battery unit, and the public power grid, avoiding the situation of over-power supply or under-power supply. At the same time, considering the limitations of the maximum load electrical energy power allowed to be accessed by the public power grid and the maximum power generation capacity of the public power grid, the safe and stable operation of the charging system and the public power grid is ensured.

[0115] (4) The system adopts a modular design, including modules such as photovoltaic intelligent road units, vehicle-mounted charging management units, central control platforms, energy storage battery units, charging pile units, and public power grids. The modules are communicatively connected to realize real-time data transmission and sharing. This design makes the system have good scalability and flexibility, facilitating system upgrade and maintenance. The central control platform analyzes and processes the data of each module through the data processing center, establishes a robust energy hierarchical priority power supply strategy based on the electrical energy converted by the photovoltaic intelligent road unit and the charging demand load, judges the power supply relationship between the photovoltaic, energy storage, and power grid, and conducts dispatching control. At the same time, the charging strategy control module can predict the charging demand of new energy vehicles and generate charging power adjustment instructions; the dispatching management module can generate road dispatching instructions; the safety protection module can conduct safety warning judgments and generate protection instructions, improving the intelligent level and management efficiency of the system.

[0116] The present disclosure may be a system, method, and / or computer program product. The computer program product may include a computer-readable storage medium having computer-readable program instructions thereon for causing a processor to implement various aspects of the present disclosure.

[0117] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications or equivalent substitutions can still be made to the specific implementation manners of the present invention, and any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.

Claims

1. A new energy vehicle charging control method based on photovoltaic intelligent roads, characterized in that: include: The real-time monitoring sensors in the charging station collect the operating status information data of the photovoltaic intelligent road unit, energy storage battery unit, charging pile unit and public power grid, including the power converted by the photovoltaic intelligent road unit, the power in the energy storage battery unit and the charging demand load of the charging pile unit; The collected operation status information data and the charging request received by the on-board charging management unit for new energy vehicles are sent to the central control platform. At the same time, the central control platform obtains the peak and valley status of the current period in real time through the power grid monitoring unit; A robust energy-graded priority power supply strategy is established based on the power conversion of photovoltaic intelligent road units and the charging demand load. The power supply relationship between photovoltaic, energy storage and power grid is determined by the power supply strategy and the peak and valley status of the power grid. The central control platform dispatches the photovoltaic intelligent road unit to supply electricity according to the charging request based on the robust energy classification priority power supply strategy, and charges the new energy vehicle through the on-board charging management unit based on the energy storage battery unit and the charging pile unit connected to the public power grid.

2. According to claim 1, a new energy vehicle charging control method based on photovoltaic intelligent road is characterized in that: The robust energy hierarchical priority power supply strategy includes: When the electric energy converted by the photovoltaic intelligent road unit, the electric energy in the energy storage battery unit, or the sum of the two meets the charging demand of new energy vehicles, the electric energy converted by the photovoltaic intelligent road unit and the electric energy in the energy storage battery unit will be given priority to realize the power dispatch of robust energy classification priority power supply; If the electric energy converted by the photovoltaic intelligent road unit and the electric energy in the energy storage battery unit do not meet the charging needs of new energy vehicles, the electric energy converted by the photovoltaic intelligent road unit and the electric energy in the energy storage battery unit will be used as the first priority power supply, and electricity purchased from the public power grid will be used as the second supplementary power supply.

3. A new energy vehicle charging control method based on photovoltaic intelligent road according to claim 2, characterized in that: The power dispatching process of the robust energy hierarchical priority power supply includes: Establish robust energy-graded priority power supply constraints based on the converted power and charging demand load of the photovoltaic intelligent road unit, and determine the power supply relationship between photovoltaic, energy storage and grid based on the constraints and grid status; If the current power grid is in a low period, the electric energy converted by the photovoltaic smart road unit is greater than the charging demand load of the charging pile unit connected to the new energy vehicle, and the excess photovoltaic power is used to charge the energy storage battery unit after the charging demand load is met; if the electric energy converted by the photovoltaic smart road unit is less than the charging demand load of the charging pile unit connected to the new energy vehicle, the shortfall due to insufficient photovoltaic power supply is supplemented by purchasing electricity from the public power grid; If the current power grid is in a normal period, the electric energy converted by the photovoltaic smart road unit is greater than the charging demand load of the charging pile unit connected to the new energy vehicle, and the excess photovoltaic electric energy is used to charge the energy storage battery unit after the charging demand load is met; if the electric energy converted by the photovoltaic smart road unit is less than the charging demand load of the charging pile unit connected to the new energy vehicle, the gap due to insufficient photovoltaic power supply will be first provided by the energy storage battery unit, and if there is still a power supply gap, it will be supplemented by purchasing electricity from the public power grid; If the current power grid status is in peak period, the electric energy converted by the photovoltaic smart road unit is greater than the charging demand load of the charging pile unit connected to the new energy vehicle, and after the charging demand load is met, the excess photovoltaic electric energy will first be fed back to the public power grid; if the electric energy converted by the photovoltaic smart road unit is less than the charging demand load of the charging pile unit connected to the new energy vehicle, the gap based on insufficient photovoltaic power supply will first be provided by the energy storage battery unit, and if there is still a power supply gap, it will be supplemented by purchasing electricity from the public power grid.

4. A new energy vehicle charging control method based on photovoltaic intelligent road according to claim 2, characterized in that: The establishment of robust energy hierarchical priority power supply constraint conditions includes: The charging demand load power is composed of the power converted by the photovoltaic intelligent road unit, the power in the energy storage battery unit and the power provided by the public power grid, and the constraints are as follows: Logic 1: To meet the charging demand, the sum of the charging powers of the three devices at any time must be greater than the charging demand load power; Logic 2: At the same time, the power converted by the photovoltaic intelligent road unit consumed in a certain cycle period does not exceed the power converted by the photovoltaic intelligent road unit in the current cycle period; Logic3: The actual electric power converted by the photovoltaic intelligent road unit in a certain cycle period shall not exceed the sum of the electric power converted by the photovoltaic intelligent road unit and provided to the energy storage battery, the electric power charged by the photovoltaic intelligent road unit to the energy storage battery unit, and the electric power provided by the photovoltaic intelligent road unit to the public power grid.

5. A new energy vehicle charging control method based on photovoltaic intelligent road according to claim 2, characterized in that: The establishment of robust energy hierarchical priority power supply constraint conditions includes: When the number of new energy vehicles connected to the charging station meets the specified number in the station, based on the restrictions of the maximum access load electric power allowed by the public power grid and the maximum online carrying electric power, the maximum access load electric power allowed by the public power grid shall not be less than the sum of the electric power provided by the public power grid for the charging pile unit and the charging power provided by the public power grid for the energy storage battery unit during the cycle period, and the maximum online carrying electric power shall be greater than or equal to the electric power provided by the photovoltaic smart road unit to the public power grid during the cycle period.

6. A new energy vehicle charging control system based on photovoltaic intelligent roads, applied to a new energy vehicle charging control method based on photovoltaic intelligent roads as described in any one of claims 1 to 5, characterized in that: Photovoltaic intelligent road unit, on-board charging management unit, central control platform, energy storage battery unit, charging pile unit and public power grid; The photovoltaic intelligent road unit is communicatively connected with the central control platform; The on-board charging management unit is connected to the central control platform and installed inside the new energy electric vehicle, and is used to receive the electric energy of the charging pile unit and manage the charging process; The charging pile unit is connected to the photovoltaic intelligent road unit, the energy storage battery unit and the public power grid to obtain the electric energy dispatched by the photovoltaic intelligent road unit, the energy storage battery unit and the public power grid according to the robust energy classification priority power supply strategy and transmit it to the on-board charging management unit. The photovoltaic intelligent road unit is used to convert solar energy into electrical energy and cooperate with the energy storage battery unit and the public power grid to transmit the electrical energy to the on-board charging management unit through the charging pile unit to power the new energy vehicle; The central control platform is used to establish a robust energy-graded priority power supply strategy based on the converted electric energy and charging demand load of the photovoltaic intelligent road unit, judge the power supply relationship between photovoltaic, energy storage and power grid through the power supply strategy and the peak and valley state of the power grid, and perform scheduling control of the photovoltaic intelligent road unit and the on-board charging management unit.

7. A new energy vehicle charging control system based on photovoltaic intelligent roads according to claim 6, characterized in that: The photovoltaic intelligent road unit includes a photovoltaic panel, an energy storage battery unit, an energy conversion module, and a data acquisition and transmission module; The photovoltaic panel is connected to the energy storage battery unit through an energy conversion module, the energy storage battery unit is connected to the data acquisition and transmission module, and the data acquisition and transmission module is respectively connected to the central control platform and the on-board charging management unit.

8. A new energy vehicle charging control system based on photovoltaic intelligent roads according to claim 7, characterized in that: The on-board charging management unit includes an on-board energy management module and an on-board wireless communication module; The on-board energy management module is respectively connected to the on-board wireless communication module, the new energy vehicle and the data acquisition and transmission module, and the on-board wireless communication module is connected to the central control platform.

9. A new energy vehicle charging control system based on photovoltaic intelligent roads according to claim 7, characterized in that: The central control platform includes a data processing center, a charging strategy control module, a scheduling management module and a safety protection module; The data processing center is used to receive the data converted by the photovoltaic intelligent road unit and the data transmitted by the vehicle charging management unit, and transmit the data to the charging strategy control module, the scheduling management module and the safety protection module respectively after data cleaning; The charging strategy is used for the control module to predict the charging demand of the new energy vehicle according to the data, generate a charging power adjustment instruction and transmit it to the on-board charging management unit.

10. A new energy vehicle charging control system based on photovoltaic intelligent roads according to claim 9, characterized in that: The dispatch management module is used to establish a robust energy hierarchical priority power supply strategy according to the converted electric energy and charging demand load of the photovoltaic intelligent road unit, and to generate a road dispatch instruction based on the power supply strategy and the peak and valley state of the power grid to judge the power supply relationship between photovoltaic, energy storage and power grid and transmit it to the photovoltaic intelligent road unit; The safety protection module is used to make safety warning judgments based on the data and generate protection instructions that are transmitted to the photovoltaic intelligent road unit and the on-board charging management unit respectively.

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